Chemistry, 20.07.2019 04:00, pennygillbert

He radioisotope radon-222 has a half-life of 3.8 days. how much of a 65-g sample of radon-222 would be left after approximately 15 days?

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He radioisotope radon-222 has a half-life of 3.8 days. how much of a 65-g sample of radon-222 would...