Iodine-131 has a half-life of 8 days.How much of a 1000 milligram sample of iodine-131 would be left after 32 days?

Question

Quizplus · Accepted Answer

Using the formula N = N0(1/2)^(t/h), where N is the amount remaining after a certain amount of time, N0 is the initial amount, t is the time elapsed, and h is the half-life, we can calculate the amount of iodine-131 remaining after 32 days:
N = 1000(1/2)^(32/8) = 62.5
Therefore, the answer is choice D, 62.5 milligram.

Iodine-131 Has a Half-Life of 8 Days