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Mathematics, 09.03.2021 04:10 gilbertej437

theres a bot spreading a link to a file with a virus but i need help with this question Element X is a radioactive isotope such that every 28 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 70 grams, how long would it be until the mass of the sample reached 38 grams, to the nearest tenth of a year?

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