The half-life of chromium-51 is 27.8 days.How many half-lives have elapsed after one year?

Name: The half-life of chromium-51 is 27.8 days.How many half-lives have elapsed after one year?
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Question

Quizplus · Accepted Answer

One year is equal to 365 days. To find the number of half-lives that have elapsed, we divide the time elapsed by the half-life of the isotope:

Number of half-lives = (Time elapsed) / (Half-life)

Number of half-lives = 365 / 27.8 ≈ 13.1

Therefore, after one year, 13.1 half-lives have elapsed. The best choice is D.

The Half-Life of Chromium-51 Is 27