Iodine-131 is used in the diagnosis and treatment of thyroid disease and has a half-life of 8.0 days. If a patient with thyroid disease consumes a sample of Na131 I containing 15 μg 131 I, how long will it take for the amount of 131 I to decrease to 1/500 of the original amount?

Chemistry: Matter and Change
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Chapter24: Nuclear Chemistry
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Problem 108A
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Iodine-131 is used in the diagnosis and treatment of thyroid disease and has a half-life of 8.0 days. If a patient with thyroid disease consumes a sample of Na131 I containing 15 μg 131 I, how long will it take for the amount of 131 I to decrease to 1/500 of the original amount?

 

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