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Lelechka [254]
3 years ago
14

A sample of rock is found to contain 100 grams of a parent isotope. How many grams of the parent isotope will remain after two h

alf-lives?
100

75

50

25
Biology
2 answers:
Alja [10]3 years ago
7 0
The answer is 50. I really hope this helps.
dalvyx [7]3 years ago
7 0

Answer:

25 grams

Explanation:

If you see only

100 and 25 then it's 25

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