A 0.1000-g sample of phosphorus-32 has an activity of 1.056 * 10¹⁵ Bq.After seven days, what is the activity of the sample? Assume the molar mass of 32P is 32 g/mol and its half-life is 14.3 days.

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Quizplus · Accepted Answer

The activity of a radioactive sample decreases over time according to its half-life. After seven days, which is half of the half-life of phosphorus-32 (14.3 days), the activity will be reduced to approximately 70.7% of its initial value. Calculating this gives an activity of approximately 7.5 x 10^14 Bq.

A 01000-G Sample of Phosphorus-32 Has an Activity of 1