The isotope ²⁰¹Th is used in the diagnosis of heart disease. It has a first-order rate constant, k, of 9.49 *10^-³ h^-¹. What is the half-life for ²⁰¹Th?

Name: The isotope 201 Th is used in the diagnosis of heart disease. It has a first-order rate constant, k, of 9.49 *10 - 3 h - 1 . What is the half-life for 201 Th?
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Quizplus · Accepted Answer

The half-life of a first-order reaction is given by the equation t_1/2 = ln(2)/k. Substituting the given value of k, we get t_1/2 = ln(2)/9.49 * 10^-³ h^-¹ = 73 hr.

The Isotope 201Th Is Used in the Diagnosis of Heart

The Isotope ²⁰¹Th Is Used in the Diagnosis of Heart