The half-life of ²⁰F is 11 s. What fraction of a sample of ²⁰F will remain after 99 s have elapsed? A) 1/10 B) 1/9 C) 1/400 D) 1/512 E) None of these

Question

Quizplus · Accepted Answer

The fraction of a sample remaining after a certain number of half-lives can be calculated using the formula (1/2)^n, where n is the number of half-lives elapsed. In this case, 99 s / 11 s per half-life = 9 half-lives. Therefore, the fraction remaining is (1/2)^9 = 1/512.

The Half-Life of 20F Is 11 S

The Half-Life of ²⁰F Is 11 S