Mathematics, 31.12.2020 02:10 val6298

Element x is a radioactive isotope such that every 26 years , its mass decreases by half. Given that the initial mass of a sample of element X is 680 grams, how much of the element would remain after 19 years, to the nearest whole number?

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Element x is a radioactive isotope such that every 26 years , its mass decreases by half. Given that...