Mathematics, 23.05.2020 23:01 chem1014

A certain radioactive element has a half-life of 30 years. How long does it take for an 80-gram sample to decay to 20 grams? Explain why you do not need your calculator to solve this problem.
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A certain radioactive element has a half-life of 30 years. How long does it take for an 80-gram samp...