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How much of a 50g sample of 85Kr will remain after 2 half-lives?

How much of a 50g sample of 85Kr will remain after 2 half-lives?
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How much of a 50g sample of 85Kr will remain after 2 half-lives?

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User Ryan Durkin
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Answer:

i need help with my work

Step-by-step explanation:

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User Pearman
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