Physics, 21.07.2019 16:30 khushailawadip9dkn2

A500g sample of potassium-40 is left to decay radioactively. after 3.9 x 109 years, about how many grams of potassium-40 are expected to remain? [the half-life of potassium-40 is 1.3 x 109 years.]

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A500g sample of potassium-40 is left to decay radioactively. after 3.9 x 109 years, about how many g...