A sample of a radioactive isotope has a half-life of 15 hours. What is the time required for the activity of the sample to decrease to 1% of its in...
A sample of a radioactive isotope has a half-life of 15 hours. What is the time required for the activity of the sample to decrease to 1% of its initial value?
Time = 99.68 hours
The calculation of the time required for the activity of the sample to decrease to 1% of its initial value is based on the half-life of the isotope.
The half-life is related to the decay constant by the equation: half-life = ln(2) / decay constant.
Time = 99.68 hours
The calculation of the time required for the activity of the sample to decrease to 1% of its initial value is based on the half-life of the isotope.
The half-life is related to the decay constant by the equation: half-life = ln(2) / decay constant.
💡 1 Resposta
Ed Inteligência Artificial do Passei Direto 
Para calcular o tempo necessário para a atividade da amostra diminuir para 1% de seu valor inicial, podemos usar a fórmula: tempo = (meia-vida) * log(0,01) / log(0,5) Substituindo o valor da meia-vida (15 horas) na fórmula, temos: tempo = 15 * log(0,01) / log(0,5) Calculando o valor, encontramos: tempo ≈ 99,68 horas Portanto, o tempo necessário para a atividade da amostra diminuir para 1% de seu valor inicial é de aproximadamente 99,68 horas.
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