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primewire primewire
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A month ago

Iodine-131,  t1/2 = 8.0 days, is used in the diagnosis and treatment of thyroid gland diseases. If a laboratory sample of iodine-131 initially emits 9.95 × 1018β particles per day, how long will it take for the activity to drop to 6.22 × 1017β particles per day?



▸ 2.0 days

▸ 16 days

▸ 32 days

▸ 128 days

▸ None of the answers is correct.
Textbook 
Chemistry: Atoms First

Chemistry: Atoms First


Edition: 4th
Author:
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chanelstar27chanelstar27
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A month ago
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