<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">1 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x2 h2 y2 ff2 fs1 fc0 sc0 ls0 ws0">EDNEA BARBOSA DE ALMEIDA </div><div class="t m0 x3 h2 y3 ff2 fs1 fc0 sc0 ls0 ws0">EDUARDO RODRIGUES DA SILVA </div><div class="t m0 x4 h2 y4 ff2 fs1 fc0 sc0 ls0 ws0">GABRIEL TONETTI DE BULHÕES </div><div class="t m0 x5 h2 y5 ff2 fs1 fc0 sc0 ls0 ws0">LAILA MEIRA RODRIGUES </div><div class="t m0 x6 h3 y6 ff2 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h3 y7 ff2 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h3 y8 ff2 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x7 h4 y9 ff3 fs1 fc0 sc0 ls0 ws0">ESPECTROSCOPIA<span class="_1 blank"></span> DE EMISS<span class="_2 blank"> </span>Ã<span class="_1 blank"></span>O </div><div class="t m0 x1 h5 ya ff3 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h5 yb ff3 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h5 yc ff3 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 yd ff2 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 ye ff2 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 yf ff2 fs3 fc0 sc0 ls0 ws0">Relatório apresenta<span class="_2 blank"> </span>do à disciplina de Quím<span class="_2 blank"> </span>ica I, do </div><div class="t m0 x6 h6 y10 ff2 fs3 fc0 sc0 ls0 ws0">curso <span class="_3 blank"> </span>de <span class="_3 blank"> </span>Engenharia <span class="_3 blank"> </span>Sanitária <span class="_3 blank"> </span>e <span class="_4 blank"> </span>Ambiental <span class="_3 blank"> </span>do </div><div class="t m0 x6 h6 y11 ff2 fs3 fc0 sc0 ls0 ws0">Instituto <span class="_5 blank"> </span>Federal <span class="_5 blank"> </span>do <span class="_6 blank"> </span>Espírito <span class="_5 blank"> </span>Santo, <span class="_5 blank"> </span>com<span class="_2 blank"> </span>o <span class="_5 blank"> </span>requisito </div><div class="t m0 x6 h6 y12 ff2 fs3 fc0 sc0 ls0 ws0">parcial para avaliação.<span class="_2 blank"> </span> </div><div class="t m0 x6 h6 y13 ff2 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h7 y14 ff2 fs0 fc0 sc0 ls0 ws0">Orientador: Pro<span class="_1 blank"></span>f. Alex<span class="_1 blank"></span> dos Santos Borges<span class="_1 blank"></span>. </div><div class="t m0 x6 h7 y15 ff2 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h7 y16 ff2 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h7 y17 ff2 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h7 y18 ff2 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h2 y19 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x8 h2 y1a ff2 fs1 fc0 sc0 ls0 ws0">Vitória </div><div class="t m0 x9 h2 y1b ff2 fs1 fc0 sc0 ls0 ws0">2016 </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">2 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h4 y1c ff3 fs1 fc0 sc0 ls0 ws0">SUMÁRIO <span class="_7 blank"> </span> </div><div class="t m0 x1 h1 y1d ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y1e ff2 fs1 fc0 sc0 ls0 ws0">1 INTRODUÇÃO <span class="_8 blank"></span><span class="ls1 ws1">.........................................................................................................<span class="ls0 ws0"> <span class="_9 blank"></span>3 </span></span></div><div class="t m0 x1 h2 y1f ff2 fs1 fc0 sc0 ls0 ws0">2 OBJETIVO <span class="_a blank"></span><span class="ls1 ws1">................................................................................................................<span class="ls0 ws0"> <span class="_9 blank"></span>8 </span></span></div><div class="t m0 x1 h2 y20 ff2 fs1 fc0 sc0 ls0 ws0">3 MATERIAIS E REAGENTES <span class="_a blank"></span><span class="ls1 ws1">....................................................................................<span class="ls0 ws0"> <span class="_9 blank"></span>9 </span></span></div><div class="t m0 x1 h2 y21 ff2 fs1 fc0 sc0 ls2 ws0">4 <span class="ls0">PROCEDIMENTOS <span class="_9 blank"></span><span class="ls1 ws1">..................................................................................................<span class="ls0 ws0"> <span class="_9 blank"></span>9<span class="fc1"> </span></span></span></span></div><div class="t m0 x1 h2 y22 ff2 fs1 fc0 sc0 ls0 ws0">5 RESULTADOS E DISCUSSÕES ...............................<span class="_1 blank"></span>.............<span class="_2 blank"> </span>...............................<span class="_1 blank"></span>10 </div><div class="t m0 x1 h2 y23 ff2 fs1 fc0 sc0 ls0 ws0">6 CONCLUSÃO .........................................................<span class="_1 blank"></span>................<span class="_2 blank"> </span>.........................<span class="_1 blank"></span>......11 </div><div class="t m0 x1 h2 y24 ff2 fs1 fc0 sc0 ls0 ws0">7 REFERÊNCIAS BIBLIOGRÁFICAS ......................................................................13 </div><div class="t m0 x1 h1 y25 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y26 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y27 ff3 fs1 fc0 sc0 ls0 ws0"> <span class="_b blank"> </span> </div><div class="t m0 x1 h4 y28 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y29 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y2a ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y2b ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y2c ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y2d ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y2e ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y2f ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y30 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y31 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y32 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y33 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y34 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y35 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y36 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y37 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y38 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y39 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y3a ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y3b ff3 fs1 fc0 sc0 ls0 ws0"> </div><a class="l" data-dest-detail='[3,"XYZ",82,756,null]'><div class="d m1" style="border-style:none;position:absolute;left:82.800000px;bottom:694.690000px;width:457.550000px;height:20.870000px;background-color:rgba(255,255,255,0.000001);"></div></a><a class="l" data-dest-detail='[7,"XYZ",82,549,null]'><div class="d m1" style="border-style:none;position:absolute;left:82.800000px;bottom:673.820000px;width:457.550000px;height:20.870000px;background-color:rgba(255,255,255,0.000001);"></div></a><a class="l" data-dest-detail='[9,"XYZ",82,756,null]'><div class="d m1" style="border-style:none;position:absolute;left:82.800000px;bottom:652.950000px;width:457.550000px;height:20.870000px;background-color:rgba(255,255,255,0.000001);"></div></a><a class="l" data-dest-detail='[9,"XYZ",82,430,null]'><div class="d m1" style="border-style:none;position:absolute;left:82.800000px;bottom:632.080000px;width:457.550000px;height:20.870000px;background-color:rgba(255,255,255,0.000001);"></div></a></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img fetchpriority="low" loading="lazy" class="bi xa y3c w1 h8" alt="" src="https://files.passeidireto.com/3d424b4b-ef47-4526-9be3-b581a8ebaea0/bg3.png"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">3 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h4 y2 ff3 fs1 fc0 sc0 ls0 ws0">1 INTRODUÇÃO </div><div class="t m0 x1 h2 y3d ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y3e ff2 fs1 fc0 sc0 ls0 ws0">Obter <span class="_5 blank"> </span>uma <span class="_2 blank"> </span>medida <span class="_5 blank"> </span>precisa <span class="_5 blank"> </span>d<span class="_1 blank"></span>e <span class="_5 blank"> </span>volume<span class="_1 blank"></span> <span class="_5 blank"> </span>é <span class="_2 blank"> </span>muito <span class="_5 blank"> </span>relevante <span class="_2 blank"> </span>pa<span class="_2 blank"> </span>ra <span class="_2 blank"> </span>o<span class="_2 blank"> </span>s <span class="_2 blank"> </span>métodos <span class="_5 blank"> </span>analíticos. </div><div class="t m0 x1 h4 y3f ff2 fs1 fc0 sc0 ls0 ws0">Sendo <span class="_c blank"> </span>assim, <span class="_c blank"> </span>o <span class="_c blank"> </span>conhecimento, <span class="_c blank"> </span>a <span class="_c blank"> </span>escolha <span class="_c blank"> </span>das <span class="_c blank"> </span>v<span class="_1 blank"></span>idrarias, <span class="_c blank"> </span>a <span class="_c blank"> </span>correta<span class="ff3 ls3"> </span>manipulação <span class="_c blank"> </span>e </div><div class="t m0 x1 h2 y40 ff2 fs1 fc0 sc0 ls0 ws0">inspeção <span class="_d blank"> </span>das <span class="_d blank"> </span>mesmas <span class="_d blank"> </span>são <span class="_d blank"> </span>fatores <span class="_e blank"> </span>determinantes <span class="_e blank"> </span>para <span class="_d blank"> </span>a <span class="_d blank"> </span>garantia <span class="_e blank"> </span>da<span class="_2 blank"> </span> <span class="_e blank"> </span>exatidão <span class="_e blank"> </span>nas </div><div class="t m0 x1 h2 y41 ff2 fs1 fc0 sc0 ls0 ws0">medidas. </div><div class="t m0 x1 h2 y42 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y43 ff2 fs1 fc0 sc0 ls5 ws0">A <span class="_5 blank"> </span><span class="ls0">Pipeta <span class="_5 blank"> </span>volumétrica <span class="_5 blank"> </span>(figura <span class="_2 blank"> </span>1<span class="_2 blank"> </span>) <span class="_5 blank"> </span>é <span class="_5 blank"> </span>constituída <span class="_5 blank"> </span>por <span class="_5 blank"> </span>um<span class="_1 blank"></span> <span class="_5 blank"> </span>tubo <span class="_5 blank"> </span>de <span class="_5 blank"> </span>vidro <span class="_2 blank"> </span>com <span class="_5 blank"> </span>um <span class="_5 blank"> </span>bulbo <span class="_5 blank"> </span>na </span></div><div class="t m0 x1 h2 y44 ff2 fs1 fc0 sc0 ls0 ws0">parte <span class="_e blank"> </span>ce<span class="_1 blank"></span>ntral. <span class="_6 blank"> </span>O <span class="_e blank"> </span>traço <span class="_6 blank"> </span>de <span class="_e blank"> </span>referência <span class="_6 blank"> </span>é <span class="_e blank"> </span>grav<span class="_1 blank"></span>ado <span class="_e blank"> </span>na <span class="_6 blank"> </span>parte <span class="_6 blank"> </span>do <span class="_e blank"> </span>tubo <span class="_6 blank"> </span>acima <span class="_e blank"> </span>do <span class="_6 blank"> </span>bulbo. <span class="_6 blank"> </span>É<span class="_2 blank"> </span> </div><div class="t m0 x1 h2 y45 ff2 fs1 fc0 sc0 ls0 ws0">usada para <span class="_1 blank"></span>medir <span class="_1 blank"></span>v<span class="_1 blank"></span>olumes de <span class="_1 blank"></span>líq<span class="_1 blank"></span>uidos com <span class="_1 blank"></span>elev<span class="_1 blank"></span>ada precisão. <span class="_1 blank"></span>Não <span class="_1 blank"></span>dev<span class="_1 blank"></span>e ser <span class="_1 blank"></span>aquecido. </div><div class="t m0 x1 h2 y46 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y47 ff2 fs1 fc0 sc0 ls0 ws0">Figura 1 - Pipeta volumétrica </div><div class="t m0 x1 h2 y48 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xb h6 y49 ff2 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h6 y4a ff2 fs3 fc0 sc0 ls0 ws2">Fonte:<span class="ff1 ls4 ws0"> </span><span class="ws0">http://wikicienc<span class="_2 blank"> </span>ias.casadasciencias.org/<span class="_2 blank"> </span>wiki/index.php/Fich<span class="_2 blank"> </span>eiro:Pipeta_volum<span class="_2 blank"> </span>etrica.png<span class="_2 blank"> </span> </span></div><div class="t m0 xc h9 y4b ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y4c ff2 fs1 fc0 sc0 ls0 ws0">Já <span class="_5 blank"> </span>a <span class="_5 blank"> </span>p<span class="_2 blank"> </span>ipeta <span class="_5 blank"> </span>graduada <span class="_5 blank"> </span>(Figura <span class="_5 blank"> </span>2) <span class="_6 blank"> </span>é <span class="_5 blank"> </span>um <span class="_6 blank"> </span>tubo <span class="_5 blank"> </span>cilíndrico <span class="_5 blank"> </span>com <span class="_5 blank"> </span>uma <span class="_6 blank"> </span>escala <span class="_5 blank"> </span>numerada <span class="_5 blank"> </span>do </div><div class="t m0 x1 h2 y4d ff2 fs1 fc0 sc0 ls0 ws0">alto para <span class="_1 blank"></span>baixo, <span class="_1 blank"></span>até <span class="_1 blank"></span>a <span class="_1 blank"></span>sua capacidade <span class="_1 blank"></span>máxim<span class="_1 blank"></span>a. Pode <span class="_1 blank"></span>ser us<span class="_1 blank"></span>ada par<span class="_1 blank"></span>a trans<span class="_1 blank"></span>ferir <span class="_1 blank"></span>frações </div><div class="t m0 x1 h2 y4e ff2 fs1 fc0 sc0 ls0 ws0">de seu<span class="_2 blank"> </span> volume total. <span class="_2 blank"> </span>Encontra pouca ap<span class="_2 blank"> </span>licação sempre que <span class="_2 blank"> </span>se deseja medir <span class="_2 blank"> </span>volumes </div><div class="t m0 x1 h2 y4f ff2 fs1 fc0 sc0 ls0 ws0">líquidos com maior precisão. Também não deve ser aquecida. </div><div class="t m0 x1 h9 y50 ff4 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y51 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y52 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y53 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y54 ff2 fs1 fc0 sc0 ls0 ws0"> </div><a class="l"><div class="d m1" style="border-style:none;position:absolute;left:113.410000px;bottom:274.410000px;width:386.910000px;height:17.250000px;background-color:rgba(255,255,255,0.000001);"></div></a></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img fetchpriority="low" loading="lazy" class="bi xa y55 w2 ha" alt="" src="https://files.passeidireto.com/3d424b4b-ef47-4526-9be3-b581a8ebaea0/bg4.png"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">4 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h2 y2 ff2 fs1 fc0 sc0 ls0 ws0">Figura 2 <span class="ff5 ls2">\u2013</span> Pipeta graduada </div><div class="t m0 xd h2 y56 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 y57 ff2 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h9 y58 ff2 fs3 fc0 sc0 ls0 ws0">Fonte: http://wik<span class="_2 blank"> </span>iciencias.casadasciencias.org/<span class="_2 blank"> </span>wiki/index.php/Pipeta<span class="_2 blank"> </span>_graduada<span class="_2 blank"> </span><span class="ff4 fs1"> </span></div><div class="t m0 x1 h2 y59 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y27 ff2 fs1 fc0 sc0 ls0 ws0">A proveta (figura 3) é um frasco destinado a medidas aproximadas <span class="_1 blank"></span>de volume. <span class="_2 blank"> </span> </div><div class="t m0 x1 h2 y28 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y29 ff2 fs1 fc0 sc0 ls0 ws0">Figura 3 - Proveta ou cilindro graduado: </div><div class="t m0 x1 h2 y2a ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xe h2 y5a ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h6 y5b ff2 fs3 fc0 sc0 ls0 ws0">Fonte: http://www.un<span class="_2 blank"> </span>ividros.com<span class="_2 blank"> </span>/proveta_graduacao_perm<span class="_2 blank"> </span>anente.php<span class="_2 blank"> </span> </div><div class="t m0 x1 h2 y5c ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y5d ff2 fs1 fc0 sc0 ls0 ws0">Assim <span class="_d blank"> </span>como <span class="_d blank"> </span>as <span class="_d blank"> </span>pipetas, <span class="_d blank"> </span>as <span class="_f blank"> </span>buretas <span class="_d blank"> </span>(figura <span class="_e blank"> </span>4<span class="_2 blank"> </span>) <span class="_e blank"> </span>são<span class="_2 blank"> </span> <span class="_d blank"> </span>capazes <span class="_e blank"> </span>d<span class="_2 blank"> </span>e <span class="_e blank"> </span>dispensar <span class="_f blank"> </span>qualquer </div><div class="t m0 x1 h2 y5e ff2 fs1 fc0 sc0 ls0 ws0">volume, <span class="_f blank"> </span>até <span class="_d blank"> </span>sua <span class="_f blank"> </span>capacidade <span class="_d blank"> </span>m<span class="_2 blank"> </span>áxima. <span class="_d blank"> </span>É <span class="_f blank"> </span>um <span class="_d blank"> </span>tubo <span class="_f blank"> </span>calibrado <span class="_f blank"> </span>usado <span class="_f blank"> </span>para <span class="_d blank"> </span>conter <span class="_f blank"> </span>um </div><div class="t m0 x1 h2 y5f ff2 fs1 fc0 sc0 ls0 ws0">titulante <span class="_10 blank"> </span>com <span class="_10 blank"> </span>u<span class="_1 blank"></span>m <span class="_10 blank"> </span>sistema <span class="_10 blank"> </span>de <span class="_10 blank"> </span>v<span class="_1 blank"></span>álvula <span class="_10 blank"> </span>(torn<span class="_1 blank"></span>eira), <span class="_10 blank"> </span>pelo <span class="_10 blank"> </span>q<span class="_1 blank"></span>ual <span class="_10 blank"> </span>a <span class="_10 blank"> </span>v<span class="_1 blank"></span>azão <span class="_10 blank"> </span>de <span class="_10 blank"> </span>titula<span class="_1 blank"></span>nte <span class="_10 blank"> </span>é </div><div class="t m0 x1 h2 y60 ff2 fs1 fc0 sc0 ls0 ws0">controlada. </div><div class="t m0 x1 h2 y61 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y62 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y63 ff2 fs1 fc0 sc0 ls0 ws0"> </div><a class="l"><div class="d m1" style="border-style:none;position:absolute;left:113.930000px;bottom:519.010000px;width:320.240000px;height:17.250000px;background-color:rgba(255,255,255,0.000001);"></div></a></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img fetchpriority="low" loading="lazy" class="bi xa y64 w3 hb" alt="" src="https://files.passeidireto.com/3d424b4b-ef47-4526-9be3-b581a8ebaea0/bg5.png"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">5 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h2 y2 ff2 fs1 fc0 sc0 ls0 ws0">Figura 4 <span class="ff5 ls2">\u2013</span> Bureta </div><div class="t m0 x1 h2 y56 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y65 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 xf h2 y66 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h6 y67 ff2 fs3 fc0 sc0 ls0 ws0">Fonte: http://www.un<span class="_2 blank"> </span>ividros.com<span class="_2 blank"> </span>/bureta_graduada.php<span class="_2 blank"> </span> </div><div class="t m0 x1 h2 y68 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y69 ff2 fs1 fc0 sc0 ls0 ws0">Balão <span class="_6 blank"> </span>volumétrico <span class="_6 blank"> </span>(figura <span class="_6 blank"> </span>5) <span class="_e blank"> </span>é <span class="_6 blank"> </span>um <span class="_6 blank"> </span>aparelho <span class="_6 blank"> </span>con<span class="_2 blank"> </span>struído <span class="_6 blank"> </span>para <span class="_6 blank"> </span>conter <span class="_6 blank"> </span>certo <span class="_6 blank"> </span>volume <span class="_6 blank"> </span>de </div><div class="t m0 x1 h2 y6a ff2 fs1 fc0 sc0 ls0 ws0">líquido. <span class="_5 blank"> </span>Apresenta-se <span class="_5 blank"> </span>na <span class="_5 blank"> </span>forma <span class="_5 blank"> </span>de <span class="_5 blank"> </span>um <span class="_5 blank"> </span>globo <span class="_5 blank"> </span>de <span class="_5 blank"> </span>fundo <span class="_5 blank"> </span>chato, <span class="_5 blank"> </span>provido <span class="_5 blank"> </span>de <span class="_5 blank"> </span>um <span class="_5 blank"> </span>gargalo </div><div class="t m0 x1 h2 y6b ff2 fs1 fc0 sc0 ls0 ws0">longo <span class="_1 blank"></span>e <span class="_11 blank"></span>estreito, <span class="_1 blank"></span>d<span class="_1 blank"></span>e <span class="_1 blank"></span>b<span class="_1 blank"></span>ordas <span class="_1 blank"></span>arredonda<span class="_1 blank"></span>das, <span class="_11 blank"></span>e<span class="_2 blank"> </span>m <span class="_11 blank"></span>que <span class="_1 blank"></span>são <span class="_11 blank"></span>adaptadas <span class="_1 blank"></span>rol<span class="_1 blank"></span>has <span class="_11 blank"></span>e<span class="_2 blank"> </span>smerilhadas </div><div class="t m0 x1 h2 y6c ff2 fs1 fc0 sc0 ls0 ws0">ou <span class="_2 blank"> </span>rolhas de <span class="_2 blank"> </span>teflon. Utilizados no <span class="_2 blank"> </span>preparo de <span class="_2 blank"> </span>soluçõ<span class="_2 blank"> </span>es, med<span class="_2 blank"> </span>ição de massa <span class="_2 blank"> </span>de <span class="_2 blank"> </span>sólidos </div><div class="t m0 x1 h2 y6d ff2 fs1 fc0 sc0 ls0 ws0">etc. </div><div class="t m0 x1 h2 y6e ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y6f ff2 fs1 fc0 sc0 ls0 ws0">Figura 5 <span class="ff5 ls2">\u2013</span> Balão volumétrico </div><div class="t m0 x1 h2 y70 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x10 h2 y71 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h6 y72 ff2 fs3 fc0 sc0 ls0 ws0">Fonte: http://m<span class="_2 blank"> </span>icroscopianomundoatual.webno<span class="_2 blank"> </span>de.com.br/laborator<span class="_2 blank"> </span>io/<span class="_2 blank"> </span> </div><div class="t m0 x1 h2 y73 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y74 ff2 fs1 fc0 sc0 ls0 ws0"> </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf6" class="pf w0 h0" data-page-no="6"><div class="pc pc6 w0 h0"><img fetchpriority="low" loading="lazy" class="bi xa y75 w4 hc" alt="" src="https://files.passeidireto.com/3d424b4b-ef47-4526-9be3-b581a8ebaea0/bg6.png"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">6 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h2 y2 ff2 fs1 fc0 sc0 ls0 ws0">O <span class="_1 blank"></span>frasco <span class="_1 blank"></span>Erlen<span class="_1 blank"></span>meyer <span class="_1 blank"></span>(figura <span class="_11 blank"></span>6) é <span class="_11 blank"></span>um <span class="_1 blank"></span>frasco <span class="_1 blank"></span>de <span class="_11 blank"></span>vidro, em <span class="_11 blank"></span>forma de <span class="_11 blank"></span>cone, co<span class="_1 blank"></span>m <span class="_1 blank"></span>sua <span class="_11 blank"></span>parte </div><div class="t m0 x1 h2 y56 ff2 fs1 fc0 sc0 ls0 ws0">superior aberta e cilíndrica. Usa<span class="_2 blank"> </span>do principalmente nas titulações para conte<span class="_2 blank"> </span>r volumes </div><div class="t m0 x1 h2 y65 ff2 fs1 fc0 sc0 ls0 ws0">durante <span class="_11 blank"></span>uma <span class="_1 blank"></span>reação. <span class="_11 blank"></span>Usado <span class="_11 blank"></span>também <span class="_1 blank"></span>para <span class="_11 blank"></span>líquidos <span class="_1 blank"></span>s<span class="_1 blank"></span>ujeitos <span class="_11 blank"></span>a <span class="_1 blank"></span>pequenos <span class="_11 blank"></span>aq<span class="_2 blank"> </span>uecimentos, </div><div class="t m0 x1 h2 y1f ff2 fs1 fc0 sc0 ls0 ws0">líquidos <span class="_12 blank"> </span>voláteis <span class="_12 blank"> </span>em <span class="_12 blank"> </span>temperatura <span class="_12 blank"> </span>ambiente, <span class="_12 blank"> </span>para <span class="_12 blank"> </span>rec<span class="_1 blank"></span>olher <span class="_12 blank"> </span>destilados <span class="_12 blank"> </span>e <span class="_12 blank"> </span>em </div><div class="t m0 x1 h2 y76 ff2 fs1 fc0 sc0 ls0 ws0">evaporações lentas. </div><div class="t m0 x1 h2 y77 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y78 ff2 fs1 fc0 sc0 ls0 ws0">Figura 6 <span class="ff5 ls2">\u2013</span> Frasco Erlenmeyer </div><div class="t m0 x1 h2 y79 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x11 h2 y7a ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h6 y7b ff2 fs3 fc0 sc0 ls0 ws0">Fonte: http://wik<span class="_2 blank"> </span>iciencias.casadasciencias.org/<span class="_2 blank"> </span>wiki/index.php/Matra<span class="_2 blank"> </span>z_(Bal%C3%A<span class="_2 blank"> </span>3o_de_Erlenm<span class="_2 blank"> </span>ey<span class="_1 blank"></span>er<span class="_2 blank"> </span> </div><div class="t m0 x1 h6 y7c ff2 fs3 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y7d ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y7e ff2 fs1 fc0 sc0 ls0 ws0">Geralmente, <span class="_2 blank"> </span>os <span class="_2 blank"> </span>equipamentos <span class="_2 blank"> </span>são <span class="_2 blank"> </span>marcados <span class="_2 blank"> </span>pelo <span class="_5 blank"> </span>fabricante <span class="_2 blank"> </span>como <span class="_2 blank"> </span>TD <span class="_2 blank"> </span>(dispensar <span class="_2 blank"> </span>ou </div><div class="t m0 x1 h2 y7f ff2 fs1 fc0 sc0 ls0 ws0">transferir) <span class="_10 blank"> </span>e <span class="_c blank"> </span>TC (cont<span class="_1 blank"></span>er), <span class="_10 blank"> </span>com <span class="_c blank"> </span>f<span class="_2 blank"> </span>inalidade <span class="_c blank"> </span>de indicar <span class="_c blank"> </span>a <span class="_10 blank"> </span>maneira <span class="_10 blank"> </span>de <span class="_10 blank"> </span>c<span class="_1 blank"></span>alibração. <span class="_10 blank"> </span>Os<span class="_1 blank"></span> </div><div class="t m0 x1 h2 y80 ff2 fs1 fc0 sc0 ls0 ws0">equipamentos volumétricos são <span class="_2 blank"> </span>usados para me<span class="_2 blank"> </span>dir volumes de líquidos <span class="_2 blank"> </span>com elevada </div><div class="t m0 x1 h2 y81 ff2 fs1 fc0 sc0 ls0 ws0">precisão, <span class="_e blank"> </span>por <span class="_6 blank"> </span>isso <span class="_e blank"> </span>recomenda<span class="_2 blank"> </span>-se <span class="_6 blank"> </span>que <span class="_e blank"> </span>os <span class="_e blank"> </span>mesmos <span class="_e blank"> </span>não <span class="_6 blank"> </span>se<span class="_2 blank"> </span>jam <span class="_6 blank"> </span>aqueci<span class="_2 blank"> </span><span class="ls2 ws3">dos</span> <span class="_e blank"> </span>e <span class="_6 blank"> </span>que <span class="_e blank"> </span>não </div><div class="t m0 x1 h2 y82 ff2 fs1 fc0 sc0 ls0 ws0">entrem em <span class="_2 blank"> </span>contato <span class="_2 blank"> </span>prolongado com d<span class="_2 blank"> </span>eterminadas substâncias<span class="_2 blank"> </span>, <span class="_2 blank"> </span>como ácidos <span class="_2 blank"> </span>e bases </div><div class="t m0 x1 h2 y83 ff2 fs1 fc0 sc0 ls0 ws0">fortes, que podem alterar a confiabilidade dos resultados. </div><div class="t m0 x1 h2 y84 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y85 ff2 fs1 fc0 sc0 ls0 ws0">A <span class="_2 blank"> </span>m<span class="_2 blank"> </span>edida <span class="_2 blank"> </span>de <span class="_5 blank"> </span>v<span class="_1 blank"></span>olume <span class="_5 blank"> </span>é<span class="_1 blank"></span> <span class="_2 blank"> </span>f<span class="_2 blank"> </span>eita <span class="_2 blank"> </span>comparando<span class="_2 blank"> </span>-se <span class="_2 blank"> </span>seu <span class="_5 blank"> </span>nív<span class="_1 blank"></span>el <span class="_2 blank"> </span>com<span class="_2 blank"> </span> <span class="_2 blank"> </span>a <span class="_5 blank"> </span>graduação <span class="_2 blank"> </span>marcada <span class="_5 blank"> </span>na<span class="_1 blank"></span> </div><div class="t m0 x1 h2 y86 ff2 fs1 fc0 sc0 ls0 ws0">parede <span class="_d blank"> </span>d<span class="_2 blank"> </span>o <span class="_d blank"> </span>recipiente <span class="_d blank"> </span>u<span class="_2 blank"> </span>tilizado <span class="_d blank"> </span>para <span class="_f blank"> </span>tal. <span class="_f blank"> </span>A <span class="_d blank"> </span>superfície <span class="_d blank"> </span>d<span class="_2 blank"> </span>o <span class="_d blank"> </span>líquido <span class="_d blank"> </span>d<span class="_2 blank"> </span>entro <span class="_d blank"> </span>de <span class="_f blank"> </span>um <span class="_f blank"> </span>tubo </div><div class="t m0 x1 h2 y87 ff2 fs1 fc0 sc0 ls0 ws0">estreito <span class="_11 blank"></span>exibe <span class="_11 blank"></span>uma <span class="_11 blank"></span>curvatura <span class="_11 blank"></span>marcante, <span class="_11 blank"></span>chamado <span class="_11 blank"></span>de<span class="_2 blank"> </span> <span class="_11 blank"></span>menisco<span class="ff4 ls1">. <span class="_11 blank"></span><span class="ff2 ls0">É <span class="_11 blank"></span>comum <span class="_11 blank"></span>u<span class="_2 blank"> </span>tilizar <span class="_8 blank"></span>a <span class="_11 blank"></span>parte </span></span></div><div class="t m0 x1 h2 y88 ff2 fs1 fc0 sc0 ls0 ws0">inferior do menisco como ponto <span class="_1 blank"></span>de referência na<span class="_1 blank"></span> calibração e no uso d<span class="_1 blank"></span>e equipamento </div><div class="t m0 x1 h2 y89 ff2 fs1 fc0 sc0 ls0 ws0">volumétrico. <span class="_f blank"> </span>A <span class="_c blank"> </span>leitura <span class="_f blank"> </span>do <span class="_c blank"> </span>v<span class="_1 blank"></span>olume <span class="_c blank"> </span>é <span class="_d blank"> </span>fe<span class="_2 blank"> </span>ita <span class="_f blank"> </span>através <span class="_f blank"> </span>do <span class="_c blank"> </span>menisco, <span class="_c blank"> </span>a <span class="_f blank"> </span>linha <span class="_f blank"> </span>de <span class="_c blank"> </span>visão <span class="_f blank"> </span>do </div><div class="t m0 x1 h2 y8a ff2 fs1 fc0 sc0 ls0 ws0">operador dev<span class="_1 blank"></span>e estar <span class="_1 blank"></span>perpendicular <span class="_1 blank"></span>à graduaç<span class="_1 blank"></span>ão para <span class="_1 blank"></span>evitar <span class="_1 blank"></span>um <span class="_1 blank"></span>erro <span class="_11 blank"></span>de<span class="_2 blank"> </span>vido <span class="_1 blank"></span>à paralaxe<span class="ff4"> </span></div><div class="t m0 x1 h2 y8b ff2 fs1 fc0 sc0 ls0 ws0">(CONSTANTINO, 2014). </div><div class="t m0 x1 h2 y8c ff2 fs1 fc0 sc0 ls0 ws0"> </div><a class="l"><div class="d m1" style="border-style:none;position:absolute;left:113.930000px;bottom:450.320000px;width:419.700000px;height:17.250000px;background-color:rgba(255,255,255,0.000001);"></div></a></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf7" class="pf w0 h0" data-page-no="7"><div class="pc pc7 w0 h0"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">7 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h2 y2 ff2 fs1 fc0 sc0 ls0 ws0">Paralaxe <span class="_2 blank"> </span>é <span class="_2 blank"> </span>u<span class="_2 blank"> </span>m <span class="_2 blank"> </span>fenômeno <span class="_2 blank"> </span>que <span class="_2 blank"> </span>p<span class="_2 blank"> </span>rovoca <span class="_2 blank"> </span>a <span class="_2 blank"> </span>sensação <span class="_2 blank"> </span>d<span class="_2 blank"> </span>o <span class="_2 blank"> </span>volume <span class="_2 blank"> </span>ser <span class="_2 blank"> </span>menor <span class="_5 blank"> </span>d<span class="_1 blank"></span>o <span class="_2 blank"> </span>que <span class="_5 blank"> </span>s<span class="_1 blank"></span>eu </div><div class="t m0 x1 h2 y56 ff2 fs1 fc0 sc0 ls0 ws0">valor <span class="_1 blank"></span>real <span class="_1 blank"></span>se o <span class="_11 blank"></span>m<span class="_2 blank"> </span>enisco <span class="_1 blank"></span>for <span class="_1 blank"></span>"olhado" <span class="_1 blank"></span>por <span class="_1 blank"></span>cima da <span class="_1 blank"></span>super<span class="_1 blank"></span>fície do <span class="_1 blank"></span>lí<span class="_1 blank"></span>quido; e <span class="_1 blank"></span>do v<span class="_1 blank"></span>olume s<span class="_1 blank"></span>er </div><div class="t m0 x1 h2 y65 ff2 fs1 fc0 sc0 ls0 ws0">maior se o menisco for "olhado" abaixo da superfície do líquido. </div><div class="t m0 x1 h2 y1f ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y76 ff2 fs1 fc0 sc0 ls0 ws0">Algumas v<span class="_1 blank"></span>idrarias são <span class="_1 blank"></span>consideradas <span class="_1 blank"></span>mais <span class="_1 blank"></span>precisas <span class="_1 blank"></span>que <span class="_1 blank"></span>outras, <span class="_1 blank"></span>em <span class="_11 blank"></span>fu<span class="_2 blank"> </span>nção <span class="_1 blank"></span>disso, <span class="_1 blank"></span>cabe </div><div class="t m0 x1 h2 y77 ff2 fs1 fc0 sc0 ls0 ws0">destacar <span class="_5 blank"> </span>a <span class="_5 blank"> </span>importância <span class="_5 blank"> </span>da <span class="_5 blank"> </span>aula <span class="_5 blank"> </span>prática <span class="_5 blank"> </span>que <span class="_5 blank"> </span>objetiva <span class="_5 blank"> </span>verificar, <span class="_5 blank"> </span>de <span class="_5 blank"> </span>forma <span class="_5 blank"> </span>mais <span class="_5 blank"> </span>clara, <span class="_5 blank"> </span>a </div><div class="t m0 x1 h2 y78 ff2 fs1 fc0 sc0 ls0 ws0">ocorrência <span class="_13 blank"> </span>de <span class="_13 blank"> </span>variações <span class="_13 blank"> </span>nas <span class="_13 blank"> </span>medições, <span class="_14 blank"> </span>bem <span class="_13 blank"> </span>como <span class="_13 blank"> </span>utilização <span class="_14 blank"> </span>correta <span class="_13 blank"> </span>desses </div><div class="t m0 x1 h2 y79 ff2 fs1 fc0 sc0 ls0 ws0">instrumentos, <span class="_11 blank"></span>de <span class="_8 blank"></span>acordo <span class="_11 blank"></span>com <span class="_8 blank"></span>o<span class="_2 blank"> </span> <span class="_8 blank"></span>que <span class="_11 blank"></span>se <span class="_11 blank"></span>quer <span class="_8 blank"></span>obter <span class="_11 blank"></span>em <span class="_11 blank"></span>determinado <span class="_8 blank"></span>experimento <span class="_8 blank"></span>e<span class="_2 blank"> </span> <span class="_8 blank"></span>evitar </div><div class="t m0 x1 h2 y8d ff2 fs1 fc0 sc0 ls0 ws0">alguns erros comuns cometidos em laboratórios. </div><div class="t m0 x1 h2 y8e ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y8f ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 y90 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y91 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 y92 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y93 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 y94 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 y95 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y96 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 y97 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y98 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y99 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y9a ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 y9b ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 y9c ff1 fs0 fc0 sc0 ls0 ws0"> </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf8" class="pf w0 h0" data-page-no="8"><div class="pc pc8 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x12 y9d w5 hd" alt="" src="https://files.passeidireto.com/3d424b4b-ef47-4526-9be3-b581a8ebaea0/bg8.png"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">8 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h4 y2 ff3 fs1 fc0 sc0 ls0 ws0">2 OBJETIVO </div><div class="t m0 x1 h4 y56 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y65 ff2 fs1 fc0 sc0 ls0 ws0">Compreender <span class="_5 blank"> </span>as <span class="_2 blank"> </span>técnicas <span class="_5 blank"> </span>de<span class="_1 blank"></span> <span class="_5 blank"> </span>realização <span class="_2 blank"> </span>de <span class="_5 blank"> </span>medidas <span class="_2 blank"> </span>de <span class="_5 blank"> </span>volume, <span class="_2 blank"> </span>manusear <span class="_5 blank"> </span>v<span class="_1 blank"></span>idrarias, </div><div class="t m0 x1 h2 y1f ff2 fs1 fc0 sc0 ls0 ws0">comparar <span class="_f blank"> </span>e <span class="_f blank"> </span>d<span class="_2 blank"> </span>isting<span class="_1 blank"></span>uir <span class="_f blank"> </span>quais <span class="_f blank"> </span>de<span class="_2 blank"> </span>las <span class="_d blank"> </span>são <span class="_f blank"> </span>m<span class="_2 blank"> </span>ais <span class="_f blank"> </span>apropriadas <span class="_c blank"> </span>para <span class="_d blank"> </span>m<span class="_2 blank"> </span>edir <span class="_f blank"> </span>volumes <span class="_c blank"> </span>co<span class="_1 blank"></span>m </div><div class="t m0 x1 h2 y76 ff2 fs1 fc0 sc0 ls0 ws4">precisão<span class="fc2 ls1 ws0">. </span><span class="ws0"> </span></div><div class="t m0 x1 h4 y9e ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y9f ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y8 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya0 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya1 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya2 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya3 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya4 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya5 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya6 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya7 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya8 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 ya9 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yaa ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yab ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yac ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yad ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yae ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yaf ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yb0 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yb1 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yb2 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 yb3 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 yb4 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h1 yb5 ff1 fs0 fc0 sc0 ls0 ws0"> </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pf9" class="pf w0 h0" data-page-no="9"><div class="pc pc9 w0 h0"><img fetchpriority="low" loading="lazy" class="bi x12 yb6 w6 he" alt="" src="https://files.passeidireto.com/3d424b4b-ef47-4526-9be3-b581a8ebaea0/bg9.png"><div class="t m0 x0 h1 y0 ff1 fs0 fc0 sc0 ls0 ws0">9 </div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x1 h4 y1c ff3 fs1 fc0 sc0 ls0 ws0">3 MATERIAIS E REAGENTES </div><div class="t m0 xc h4 y3d ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y3e ff2 fs1 fc0 sc0 ls0 ws0">A tabela 1 apresenta os materiais e reagentes utiliz<span class="_1 blank"></span>ados na aula prática em questão.<span class="_2 blank"> </span> </div><div class="t m0 x1 h4 y3f ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y40 ff2 fs1 fc0 sc0 ls0 ws0">Tabela 1 <span class="ff5 ws4">\u2013</span> Materiais e reagentes utilizados na prática de medidas de volume </div><div class="t m0 x1 h4 y41 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="c x1 yb7 w7 hf"><div class="t m0 x13 h2 yb8 ff2 fs1 fc0 sc0 ls0 ws0"> </div></div><div class="c x1 yb7 w7 h10"><div class="t m0 x14 h2 yb9 ff2 fs1 fc0 sc0 ls0 ws0">Pipeta volumétrica (50 ml) Bureta (50 ml) </div><div class="t m0 x14 h2 yba ff2 fs1 fc0 sc0 ls0 ws0">Balão volumétrico (50 ml) Pêra </div><div class="t m0 x14 h2 ybb ff2 fs1 fc0 sc0 ls0 ws0">Copo de Béquer (50 ml) Pipeta de Pasteur </div><div class="t m0 x14 h2 ybc ff2 fs1 fc0 sc0 ls0 ws0">Copo de Béquer (250 ml) Suporte universal </div><div class="t m0 x14 h2 ybd ff2 fs1 fc0 sc0 ls0 ws0">Erlenmayer (50 ml) Garra para suporte </div><div class="t m0 x14 h2 ybe ff2 fs1 fc0 sc0 ls0 ws0">Proveta (50 ml) Pisseta com água destilada </div></div><div class="t m0 x1 h2 ybf ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 yc0 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yc1 ff3 fs1 fc0 sc0 ls0 ws0">4 PROCEDIMENTOS </div><div class="t m0 x1 h4 yc2 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x15 h2 yc3 ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Transferiu-se <span class="_11 blank"></span>água <span class="_11 blank"></span>destilada <span class="_11 blank"></span>pa<span class="_2 blank"> </span>ra <span class="_8 blank"></span>o <span class="_11 blank"></span>Bé<span class="_2 blank"> </span>quer <span class="_8 blank"></span>de <span class="_11 blank"></span>250 <span class="_11 blank"></span>m<span class="_2 blank"> </span>l, <span class="_11 blank"></span>com <span class="_11 blank"></span>o <span class="_11 blank"></span>a<span class="_2 blank"> </span>uxí<span class="_1 blank"></span>lio <span class="_11 blank"></span>da <span class="_1 blank"></span>pisseta; </span></div><div class="t m0 x15 h2 yc4 ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Pipetou-se <span class="_11 blank"></span>50 <span class="_11 blank"></span>mililitros <span class="_8 blank"></span>de <span class="_1 blank"></span>águ<span class="_1 blank"></span>a <span class="_11 blank"></span>destilada <span class="_11 blank"></span>com <span class="_8 blank"></span>a <span class="_11 blank"></span>p<span class="_2 blank"> </span>ipeta <span class="_8 blank"></span>volumétrica, <span class="_11 blank"></span>observando </span></div><div class="t m0 xc h2 yc5 ff2 fs1 fc0 sc0 ls0 ws0">perpendicularmente o menisco, na altura dos olhos; </div><div class="t m0 x15 h2 y13 ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Transferiu-se esse volume para a proveta de 50 ml, fez-se a leitura; </span></div><div class="t m0 x15 h2 yc6 ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Pipetou-se <span class="_5 blank"> </span>5<span class="_2 blank"> </span>0 <span class="_5 blank"> </span>ml <span class="_6 blank"> </span>de <span class="_5 blank"> </span>água <span class="_6 blank"> </span>destilada <span class="_6 blank"> </span>com <span class="_5 blank"> </span>a <span class="_6 blank"> </span>pipeta <span class="_6 blank"> </span>volumétrica <span class="_5 blank"> </span>e <span class="_6 blank"> </span>efetuou<span class="_2 blank"> </span>-se <span class="_6 blank"> </span>a </span></div><div class="t m0 xc h2 yc7 ff2 fs1 fc0 sc0 ls0 ws0">transferência <span class="_e blank"> </span>desse <span class="_e blank"> </span>v<span class="_1 blank"></span>olume <span class="_e blank"> </span>para <span class="_e blank"> </span>o <span class="_6 blank"> </span>Béquer <span class="_e blank"> </span>de <span class="_e blank"> </span>50 <span class="_6 blank"> </span>m<span class="_2 blank"> </span>l, <span class="_e blank"> </span>o<span class="_1 blank"></span>bservou<span class="_2 blank"> </span>-se <span class="_e blank"> </span>a <span class="_e blank"> </span>medida </div><div class="t m0 xc h2 yc8 ff2 fs1 fc0 sc0 ls0 ws0">obtida; </div><div class="t m0 x15 h2 yc9 ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Pipetou-se <span class="_d blank"> </span>50 <span class="_d blank"> </span>ml <span class="_d blank"> </span>de<span class="_2 blank"> </span> <span class="_e blank"> </span>água <span class="_d blank"> </span>d<span class="_2 blank"> </span>estilada <span class="_e blank"> </span>com <span class="_d blank"> </span>a <span class="_d blank"> </span>pipe<span class="_2 blank"> </span>ta <span class="_e blank"> </span>volumétrica, <span class="_d blank"> </span>transferindo, </span></div><div class="t m0 xc h2 yca ff2 fs1 fc0 sc0 ls0 ws0">posteriormente para o balão volumétrico de 50 ml, anotou-se o volume lido; </div><div class="t m0 x15 h2 ycb ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Preencheu-se <span class="_e blank"> </span>a <span class="_6 blank"> </span>b<span class="_2 blank"> </span>ureta <span class="_6 blank"> </span>d<span class="_2 blank"> </span>e <span class="_e blank"> </span>50 <span class="_6 blank"> </span>ml <span class="_e blank"> </span>(apoiada <span class="_6 blank"> </span>n<span class="_2 blank"> </span>o <span class="_e blank"> </span>suporte <span class="_6 blank"> </span>universal <span class="_e blank"> </span>p<span class="_2 blank"> </span>or <span class="_e blank"> </span>meio <span class="_e blank"> </span>d<span class="_1 blank"></span>a </span></div><div class="t m0 xc h2 ycc ff2 fs1 fc0 sc0 ls0 ws0">garra <span class="_8 blank"></span>para <span class="_11 blank"></span>suporte) <span class="_11 blank"></span>com <span class="_11 blank"></span>água <span class="_11 blank"></span>destilada, <span class="_8 blank"></span>a<span class="_2 blank"> </span>té <span class="_8 blank"></span>a <span class="_11 blank"></span>última <span class="_11 blank"></span>linha <span class="_11 blank"></span>de <span class="_8 blank"></span>marcação, <span class="_11 blank"></span>abrindo </div><div class="t m0 xc h2 ycd ff2 fs1 fc0 sc0 ls0 ws0">a torneir<span class="_1 blank"></span>a a<span class="_1 blank"></span>té qu<span class="_1 blank"></span>e a<span class="_1 blank"></span> <span class="_1 blank"></span>parte in<span class="_1 blank"></span>ferior <span class="_1 blank"></span>estivesse completa <span class="_1 blank"></span>com <span class="_1 blank"></span>água <span class="_1 blank"></span>destilada <span class="_1 blank"></span>e <span class="_11 blank"></span>n<span class="_2 blank"> </span>ão </div><div class="t m0 xc h2 yce ff2 fs1 fc0 sc0 ls0 ws0">houvesse <span class="_3 blank"> </span>bolhas <span class="_16 blank"> </span>de <span class="_3 blank"> </span>ar. <span class="_16 blank"> </span>Utilizou-se <span class="_3 blank"> </span>a <span class="_16 blank"> </span>pipeta <span class="_3 blank"> </span>de <span class="_16 blank"> </span>Pasteur <span class="_3 blank"> </span>para <span class="_3 blank"> </span>finalizar <span class="_3 blank"> </span>o </div><div class="t m0 xc h2 ycf ff2 fs1 fc0 sc0 ls0 ws0">preenchimento de 50 ml na bureta; </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div> <div id="pfa" class="pf w0 h0" data-page-no="a"><div class="pc pca w0 h0"><img fetchpriority="low" loading="lazy" class="bi x12 yd0 w8 h11" alt="" src="https://files.passeidireto.com/3d424b4b-ef47-4526-9be3-b581a8ebaea0/bga.png"><div class="t m0 x16 h1 y0 ff1 fs0 fc0 sc0 ls6 ws6">10<span class="ls0 ws0"> </span></div><div class="t m0 x1 h1 y1 ff1 fs0 fc0 sc0 ls0 ws0"> <span class="_0 blank"> </span> </div><div class="t m0 x15 h2 yd1 ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Posteriormente <span class="_e blank"> </span>dispensou-se <span class="_e blank"> </span>o <span class="_e blank"> </span>volume <span class="_e blank"> </span>(50 <span class="_e blank"> </span>ml <span class="_d blank"> </span>de <span class="_e blank"> </span>água <span class="_e blank"> </span>destilada) <span class="_e blank"> </span>da <span class="_e blank"> </span>bureta </span></div><div class="t m0 xc h2 yd2 ff2 fs1 fc0 sc0 ls0 ws0">para o balão volumétrico. </div><div class="t m0 x15 h2 yd3 ff6 fs1 fc0 sc0 ls0 ws5">\uf0b7<span class="ff2 ws0"> <span class="_15 blank"> </span>Coletou-se <span class="_5 blank"> </span>50 <span class="_5 blank"> </span>ml<span class="_1 blank"></span> <span class="_5 blank"> </span>de <span class="_2 blank"> </span>água <span class="_5 blank"> </span>destilada <span class="_5 blank"> </span>c<span class="_1 blank"></span>om <span class="_5 blank"> </span>a <span class="_2 blank"> </span>p<span class="_2 blank"> </span>ipeta <span class="_2 blank"> </span>volumétrica <span class="_5 blank"> </span>e<span class="_2 blank"> </span> <span class="_2 blank"> </span>dispensou-se </span></div><div class="t m0 xc h2 yd4 ff2 fs1 fc0 sc0 ls0 ws0">esse conteúdo no erlenmeyer. </div><div class="t m0 x1 h4 yd5 ff3 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 yd6 ff3 fs1 fc0 sc0 ls0 ws0">5 RESULTADOS E DISCUSSÕES </div><div class="t m0 x1 h2 yd7 ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 yd8 ff2 fs1 fc0 sc0 ls0 ws0">Foram realizadas medições de um volume f<span class="_2 blank"> </span>ixo (50 ml) para comparar os desvios das </div><div class="t m0 x1 h2 yd9 ff2 fs1 fc0 sc0 ls0 ws0">vidrarias <span class="_5 blank"> </span>tendo <span class="_5 blank"> </span>como <span class="_5 blank"> </span>r<span class="_1 blank"></span>eferência <span class="_5 blank"> </span>a <span class="_5 blank"> </span>pipeta <span class="_5 blank"> </span>vol<span class="_1 blank"></span>umétrica <span class="_5 blank"> </span>e <span class="_5 blank"> </span>o <span class="_5 blank"> </span>balão <span class="_5 blank"> </span>volumétrico, <span class="_5 blank"> </span>levando </div><div class="t m0 x1 h2 yda ff2 fs1 fc0 sc0 ls0 ws0">em <span class="_5 blank"> </span>consideração <span class="_6 blank"> </span>que <span class="_5 blank"> </span>as <span class="_5 blank"> </span>vidrarias <span class="_5 blank"> </span>volumétricas <span class="_5 blank"> </span>são <span class="_5 blank"> </span>consideradas <span class="_5 blank"> </span>no <span class="_5 blank"> </span>m<span class="_2 blank"> </span>eio <span class="_5 blank"> </span>científico </div><div class="t m0 x1 h2 ydb ff2 fs1 fc0 sc0 ls0 ws0">como <span class="_2 blank"> </span>as <span class="_5 blank"> </span>mais <span class="_2 blank"> </span>precisas, <span class="_2 blank"> </span>pois <span class="_2 blank"> </span>f<span class="_2 blank"> </span>oram <span class="_2 blank"> </span>elaboradas <span class="_2 blank"> </span>pa<span class="_2 blank"> </span>ra <span class="_2 blank"> </span>manipulação <span class="_2 blank"> </span>de <span class="_5 blank"> </span>u<span class="_1 blank"></span>m <span class="_2 blank"> </span>único <span class="_5 blank"> </span>v<span class="_1 blank"></span>alor, </div><div class="t m0 x1 h2 ydc ff2 fs1 fc0 sc0 ls0 ws0">e por isso não têm escalas de graduação. A tabela 2 apresenta os <span class="_2 blank"> </span>resultados obtidos<span class="_1 blank"></span> </div><div class="t m0 x1 h2 ydd ff2 fs1 fc0 sc0 ls0 ws0">que, por<span class="_1 blank"></span> sua<span class="_1 blank"></span> v<span class="_1 blank"></span>ez, <span class="_1 blank"></span>comprovam <span class="_1 blank"></span>a <span class="_1 blank"></span>variação <span class="_1 blank"></span>de <span class="_1 blank"></span>v<span class="_1 blank"></span>olume entre <span class="_11 blank"></span>o<span class="_2 blank"> </span>s <span class="_1 blank"></span>utensíli<span class="_1 blank"></span>os utiliz<span class="_1 blank"></span>ados p<span class="_1 blank"></span>ara </div><div class="t m0 x1 h2 yde ff2 fs1 fc0 sc0 ls0 ws0">medidas, onde o erro pode variar consideravelmente de uma medição para outra.<span class="_2 blank"> </span> </div><div class="t m0 x1 h2 ydf ff2 fs1 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 ye0 ff2 fs1 fc0 sc0 ls0 ws0">Tabela <span class="_5 blank"> </span>2 <span class="_2 blank"> </span>- <span class="_5 blank"> </span>Desvios <span class="_2 blank"> </span>de <span class="_5 blank"> </span>volumes <span class="_5 blank"> </span>co<span class="_1 blank"></span>m <span class="_5 blank"> </span>relação <span class="_2 blank"> </span>à <span class="_5 blank"> </span>pipeta <span class="_2 blank"> </span>volumétrica <span class="_5 blank"> </span>(50 <span class="_2 blank"> </span>ml) <span class="_5 blank"> </span>e <span class="_5 blank"> </span>ao <span class="_17 blank"> </span>balão </div><div class="t m0 x1 h2 ye1 ff2 fs1 fc0 sc0 ls0 ws0">volumétrico (50 ml) </div><div class="c x1 ye2 w9 h12"><div class="t m0 x17 h2 ye3 ff2 fs1 fc0 sc0 ls0 ws0">Vidraria </div></div><div class="c x1 ye4 w9 h13"><div class="t m0 x17 h2 ye5 ff2 fs1 fc0 sc0 ls0 ws0"> (50 ml) </div></div><div class="c x2 ye2 wa h14"><div class="t m0 x17 h2 ye6 ff2 fs1 fc0 sc0 ls0 ws0">Volume em </div><div class="t m0 x17 h2 ye7 ff2 fs1 fc0 sc0 ls0 ws0">relação à pipeta </div><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls0 ws0">volumétrica (ml) </div></div><div class="c x18 ye2 wb h12"><div class="t m0 x17 h2 ye9 ff2 fs1 fc0 sc0 ls0 ws0">Volume em </div><div class="t m0 x17 h2 yea ff2 fs1 fc0 sc0 ls0 ws0">relação ao balão </div><div class="t m0 x17 h2 yeb ff2 fs1 fc0 sc0 ls0 ws0">volumétrico </div></div><div class="c x18 ye4 wc h13"><div class="t m0 x17 h2 yec ff2 fs1 fc0 sc0 ls0 ws0">(ml) </div></div><div class="c x19 ye2 wd h12"><div class="t m0 x17 h2 ye9 ff2 fs1 fc0 sc0 ls0 ws0"> </div></div><div class="c x19 ye4 we h13"><div class="t m0 x17 h2 yed ff2 fs1 fc0 sc0 ls0 ws0">Desvio observado </div><div class="t m0 x17 h2 yee ff2 fs1 fc0 sc0 ls0 ws0">(ml) </div></div><div class="c x1 yef wf h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls0 ws0">Proveta </div></div><div class="c x2 yef wa h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls2">50<span class="ls0 ws0">,00 </span></div></div><div class="c x18 yef wc h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls2">50<span class="ls0 ws0">,00 </span></div></div><div class="c x19 yef wd h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls0 ws0">0,00 </div></div><div class="c x1 yf0 wf h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">Copo de Béquer </div></div><div class="c x2 yf0 wa h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">53,50* </div></div><div class="c x18 yf0 wc h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">53,50* </div></div><div class="c x19 yf0 wd h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">3,50* </div></div><div class="c x1 yf2 wf h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls0 ws0">Balão volumétrico </div></div><div class="c x2 yf2 wa h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls2">50<span class="ls0 ws0">,00 </span></div></div><div class="c x18 yf2 wc h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls1 ws0"> <span class="ls0">- </span></div></div><div class="c x19 yf2 wd h15"><div class="t m0 x17 h2 ye8 ff2 fs1 fc0 sc0 ls0 ws0">0,00 </div></div><div class="c x1 yf3 wf h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">Erlenmayer </div></div><div class="c x2 yf3 wa h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">50,52* </div></div><div class="c x18 yf3 wc h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">50,52* </div></div><div class="c x19 yf3 wd h16"><div class="t m0 x17 h2 yf1 ff2 fs1 fc0 sc0 ls0 ws0">0,52* </div></div><div class="c x1 yf4 wf h17"><div class="t m0 x17 h2 yf5 ff2 fs1 fc0 sc0 ls0 ws0">Bureta </div></div><div class="c x2 yf4 wa h17"><div class="t m0 x17 h2 yf5 ff2 fs1 fc0 sc0 ls2">50<span class="ls0 ws0">,00 </span></div></div><div class="c x18 yf4 wc h17"><div class="t m0 x17 h2 yf5 ff2 fs1 fc0 sc0 ls2">50<span class="ls0 ws0">,00 </span></div></div><div class="c x19 yf4 wd h17"><div class="t m0 x17 h2 yf5 ff2 fs1 fc0 sc0 ls0 ws0">0,00 </div></div><div class="t m0 x1 h6 yf6 ff2 fs3 fc0 sc0 ls0 ws0">*O <span class="_11 blank"></span>volum<span class="_2 blank"> </span>e <span class="_8 blank"></span>de <span class="_1 blank"></span>água <span class="_11 blank"></span>destilada <span class="_11 blank"></span>ultrap<span class="_2 blank"> </span>assou <span class="_11 blank"></span>o <span class="_11 blank"></span>lim<span class="_2 blank"> </span>ite <span class="_11 blank"></span>de <span class="_11 blank"></span>leitura <span class="_11 blank"></span>(ú<span class="_2 blank"> </span>ltima <span class="_11 blank"></span>linha <span class="_11 blank"></span>de <span class="_11 blank"></span>m<span class="_2 blank"> </span>arcação) <span class="_11 blank"></span>dos <span class="_1 blank"></span>instrumentos, </div><div class="t m0 x1 h6 yf7 ff2 fs3 fc0 sc0 ls0 ws0">então estimou-s<span class="_2 blank"> </span>e valores. </div><div class="t m0 x1 h2 yf8 ff2 fs1 fc0 sc0 ls0 ws0">Cabe <span class="_5 blank"> </span>considerar <span class="_17 blank"> </span>a <span class="_5 blank"> </span>existência <span class="_5 blank"> </span>de <span class="_5 blank"> </span>uma <span class="_5 blank"> </span>relação <span class="_5 blank"> </span>entre <span class="_17 blank"> </span>o <span class="_5 blank"> </span>diâmetro <span class="_5 blank"> </span>no <span class="_6 blank"> </span>local <span class="_5 blank"> </span>onde <span class="_5 blank"> </span>está <span class="_17 blank"> </span>o </div><div class="t m0 x1 h2 yf9 ff2 fs1 fc0 sc0 ls0 ws0">traço de <span class="_10 blank"> </span>aferição <span class="_10 blank"> </span>co<span class="_1 blank"></span>m a <span class="_10 blank"> </span>precisão <span class="_10 blank"> </span>da <span class="_10 blank"> </span>vidraria: <span class="_10 blank"> </span>quando <span class="_10 blank"> </span>maior <span class="_10 blank"> </span>o <span class="_10 blank"> </span>diâmetro, <span class="_10 blank"> </span>menos </div><div class="t m0 x1 h2 y71 ff2 fs1 fc0 sc0 ls0 ws0">confiável <span class="_2 blank"> </span>será <span class="_2 blank"> </span>a <span class="_2 blank"> </span>leitura, <span class="_2 blank"> </span>o <span class="_2 blank"> </span>que <span class="_2 blank"> </span>também <span class="_2 blank"> </span>está<span class="_2 blank"> </span> associado<span class="_2 blank"> </span> às <span class="_17 blank"> </span>alterações <span class="_2 blank"> </span>da <span class="_2 blank"> </span>concavidade </div><div class="t m0 x1 h2 yfa ff2 fs1 fc0 sc0 ls0 ws0">do menisco. </div></div><div class="pi" data-data='{"ctm":[1.000000,0.000000,0.000000,1.000000,0.000000,0.000000]}'></div></div>
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