Mathematics, 12.09.2019 02:30 roxyfranciscus

Asample contains 60% of its original amount of fermium-257. the half-life of fermium-257 is about 100 days. about how old is the sample? 52 days 60 days 74 days 136 days

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Asample contains 60% of its original amount of fermium-257. the half-life of fermium-257 is about 10...

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