Which of the factors below could have led to systematic error in the sample preparation? The quality of the filter paper used in the sample filtr...
Which of the factors below could have led to systematic error in the sample preparation?
The quality of the filter paper used in the sample filtration, which may have interfered with the accuracy of the sample weighing and consequently the accuracy of the results.
The use of a calibrated pipette, which may have led to incorrect measurement of the solution volume.
The variation of the ambient temperature in the laboratory, which may have caused changes in the density of the sample and the solution used and consequently affected the accuracy and precision of the results obtained.
The lack of adequate agitation of the sample during preparation, which may have led to insufficient homogenization and non-representativeness of the sample.
The use of a dirty volumetric flask, which may have interfered with the precision of the solution volume.
The quality of the filter paper used in the sample filtration, which may have interfered with the accuracy of the sample weighing and consequently the accuracy of the results.
The use of a calibrated pipette, which may have led to incorrect measurement of the solution volume.
The variation of the ambient temperature in the laboratory, which may have caused changes in the density of the sample and the solution used and consequently affected the accuracy and precision of the results obtained.
The lack of adequate agitation of the sample during preparation, which may have led to insufficient homogenization and non-representativeness of the sample.
The use of a dirty volumetric flask, which may have interfered with the precision of the solution volume.
💡 1 Resposta
Ed 
O fator que poderia ter levado a um erro sistemático na preparação da amostra é a qualidade do papel de filtro usado na filtração da amostra, que pode ter interferido na precisão da pesagem da amostra e, consequentemente, na precisão dos resultados.
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