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Chemistry, 09.10.2021 18:50 anonymous1813

In the pennium lab 1/2 life was one shake of the cup. If you stared with 100 pennies and you have 12 pennies left. What 1/2 life is it reasonable at?

0 1/2 life
1st 1/2 life
2nd 1/2 life
3rd 1/2 life

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