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OpenStudy (anonymous):

Suppose 10 grams of a plutonium isotope was released in the Chernobyl disaster and that the half life of the isotope is 24,100 years. How long will it take for the 10 grams to decay to one gram if the fate of decay of mass (m) is proportional to m, where t is the time in years?

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OpenStudy (anonymous):

rate*** not fate.

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