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Physics, 07.10.2020 07:01, andrwisawesome0
The half-life of a certain element is 100 days. How many half-lives will it be before only one-fourth of this element
remains?
04
50
25
O2
![answer](/tpl/images/cats/otvet.png)
Answers: 1
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The half-life of a certain element is 100 days. How many half-lives will it be before only one-fourt...
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