Physics

Physics, 04.12.2019 00:31, organicmemez

Natural potassium contains 40k, which has a half-life of 1.277 ✕ 109 y. what mass (in g) of 40k in a person would have a decay rate of 4180 bq? g (b) what is the fraction of 40k in natural potassium, given the person has 136 g in his body?

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Physics, 10.12.2019 19:31, ashlyo

A70 kg human body typically contains 140 g of potassium. potassium has a chemical atomic mass of 39.1 u and has three naturally occurring isotopes. one of those isotopes, 40k, is radioactive with a half-life of 1.3 billion years and a natural abundance of 0.012%. each 40k decay deposits, on average, 1.0 mev of energy into the body.

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Natural potassium contains 40k, which has a half-life of 1.277 ✕ 109 y. what mass (in g) of 40k in a...

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