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12-03-2019
Chemistry

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Nitrogen has a half life of 10 days. If you have a 75 gram sample how much is remaining after 20 days ?

Nitrogen has a half life of 10 days If you have a 75 gram sample how much is remaining after 20 days class=

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ChemBen ChemBen

23-03-2019

There is 9.375 g of nitrogen. This is because when a half-life passes, the mass becomes 2 times less. Since two half-lives have passed, you need to divide by 4.

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