Iodine-131 has a half-life of 8 days.How much of a 16-$\mu$g sample would remain after 16 days?

Name: Iodine-131 has a half-life of 8 days.How much of a 16-$\mu$g sample would remain after 16 days?
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Question

Quizplus · Accepted Answer

Since iodine-131 has a half-life of 8 days, after 8 days half of the sample would remain (8-F1F1F1S1F1F1F10g). After another 8 days (total of 16 days), half of that remaining amount would remain (4-F1F1F1S1F1F1F10g). Therefore, the answer is 4 F1F1F1S1F1F1F10g, which is choice C.

Iodine-131 Has a Half-Life of 8 Days μ\muμ G Sample Would Remain After 16 Days? A) 16

Iodine-131 Has a Half-Life of 8 Days $\mu$ G Sample Would Remain After 16 Days?
A) 16