Chemistry, 24.03.2021 21:00 delawdermia27

After 4.00 years, 3.972 g of a radioisotope remains from a sample that had an original mass of 4.00g. Calculate the half-life of this mystery radioisotope. How much of the radioisotope remains after 20.0 years?

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After 4.00 years, 3.972 g of a radioisotope remains from a sample that had an original mass of 4.00g...