monyea124 monyea124

24-05-2017
Biology

contestada

The half-life of radon-222 is about four days. How long will it take for a sample of radon-222 to decay to 3% of its original amount?

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joehalford joehalford

27-05-2017

-50% = 4 days
4/50= days to decay by 1%
4/50 *3 = 3% loss = 0.24 days = 5.76 hours

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