the half-life of a 20.0g sample of a radioactive substance is 15 hours. What is the half-life of a 5.0g sample of the same substance?
2016-12-13 9:53 am
I know that the answer is 3.8 hours. I want to know how to solve this problem.
回答 (1)
2016-12-13 10:09 am
The half-life of a radiactive substance is independent of the initial amount of the radioacitve substance.
Therefore, the half-life of a 5.0 g sample of the same substance = 15 hours
Therefore, the half-life of a 5.0 g sample of the same substance = 15 hours
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