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Iodine-123,used in Thyroid Therapy,has a Half-Life of 13

Question 3

Multiple Choice

Iodine-123,used in thyroid therapy,has a half-life of 13.27 hours.How many half-lives are required for a 160 mg sample of iodine-123 to decay to 5.0 mg?


A) 0.031
B) 1.0
C) 5.0
D) 32

Correct Answer:

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