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Chemistry, 04.01.2020 16:31 kholman

You started with 64 g of a radioactive substance. if you have 4.0 g of that substance left, then how many half-lives have elapsed?
a. 2
b. 3
c. 4
d. 5

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You started with 64 g of a radioactive substance. if you have 4.0 g of that substance left, then how...
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