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The Environmental Protection Agency has ben concerned about the levels of radon gas in homes. If a sample of gas taken from a basement contains 4.38 g of radon 222, how much radon will remain in the sample after 4 half-lives?

0.28 g

2.19 g

1.10 g

4.38 g

Sagot :

Answer is 2.19 g of radon will remain in the sample after 4 half-lives
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