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Svetlanka [38]
4 years ago
6

How many half-lives have passed when there are three times as much daughter isotope as parent isotope?

Biology
1 answer:
Stells [14]4 years ago
3 0

Answer:

2

Explanation:

1/2=0.5

0.5/2=0.25

0.25:0.75=1:3

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