tiaho412 tiaho412

17-07-2022
Chemistry

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The half-life of 131I is 80 days. How much of a 500.0 mg sample remains after 3 half lives?

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jsimpson11000 jsimpson11000

17-07-2022

Answer:

62.5 mg

Explanation:

Just multiply the original amount by 1/2 three times:

500 mg x 1/2 x 1/2 x 1/2 = 62.5 mg

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