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Lunna [17]
3 years ago
15

After three half-lives, a sample contains 10 grams of parent isotopes. How many grams of the parent isotope were present to star

t?
Biology
2 answers:
ollegr [7]3 years ago
7 0

The answer is actually (80). 80/2 is 40, 40/2 is 20, and 20/2 is 10, thus the answer is 80.

GarryVolchara [31]3 years ago
4 0
I think that the answer is 40...................................
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