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Answer to Question #268702 in Atomic and Nuclear Physics for Mthokozisi Madlala

Question #268702

Cobalt-60 has a half-life of approximately 5 years. If there was one microgram present in a sample originally, how many atoms would have decayed after 20 years?

1
Expert's answer
2021-11-21T17:26:19-0500

"N=\\frac mMN_A(1-2^{-\\frac tT})=9.4\\cdot 10^{18}."


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