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06-03-2017
Biology

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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 half-lives?

100

75

50

25

Respuesta :

Аноним Аноним

06-03-2017

the answer is 50. I really hope this helps.

Answer Link

09-01-2020

Answer:

25 grams

Explanation:

If you see only

100 and 25 then it's 25

Answer Link

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