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elena-14-01-66 [18.8K]
2 years ago
14

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

Chemistry
1 answer:
I am Lyosha [343]2 years ago
6 0

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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