Chemistry, 26.08.2020 14:01, angeladominguezgarci

Radioactive manganese-52 decays with a half-life of 5.6 days. A chemist obtains a fresh sample of manganese-52 and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to perform the experiment?

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Radioactive manganese-52 decays with a half-life of 5.6 days. A chemist obtains a fresh sample of ma...