What is the half-life of a 0.5 g sample of radioisotope that decayed to 0.125 g in 9.6 min?

asked May 21, 2018 164k views

3 votes

by Timle

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6 votes

25% remaining = 2 half-lives have passed,
9.6 / 2 = 4.8 minutes

Niel answered May 27, 2018

by Niel

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