Mathematics, 18.05.2021 04:40 shongmadi77

Element X is a radioactive isotope such that every 42 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 50 grams, how long
would it be until the mass of the sample reached 45 grams, to the nearest tenth of a
year?

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Element X is a radioactive isotope such that every 42 years, its mass decreases by half. Given that...