Chemistry, 29.08.2020 23:01 genyjoannerubiera

The half-life of strontium-90 is 28 years. How long will it take a 80-mg sample to decay to a mass of 51.2 mg

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The half-life of strontium-90 is 28 years. How long will it take a 80-mg sample to decay to a mass o...

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