Iodine-131 has a half-life of 8 days.How many half-lives have passed after 24 days?
A) 1 half-life
B) 2 half-lives
C) 3 half-lives
D) 4 half-lives
E) 5 half-lives

Name: Iodine-131 has a half-life of 8 days.How many half-lives have passed after 24 days? A) 1 half-life B) 2 half-lives C) 3 half-lives D) 4 half-lives E) 5 half-lives
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Question

Quizplus · Accepted Answer

3 half-lives have passed after 24 days because 24 divided by 8 equals 3.

Iodine-131 Has a Half-Life of 8 Days