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Asked by pamela

what is the total mass of Rn-222 remaining in an original 160-mg sample of Rn-222 after 19.1 days?
11 years ago

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Answered by Jill
5.0 mg
7 years ago
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what is the total mass of Rn-222 remaining in an original 160-mg sample of Rn-222 after 19.1 days?

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