Mathematics, 03.03.2021 04:00, nnyyy6043

If the half-life of uranium-235 is 704,000,000 years and 12.5 grams of uranium-235 remain after 2,820,000,000 years, how much of the radioactive isotope was in the original sample?

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If the half-life of uranium-235 is 704,000,000 years and 12.5 grams of uranium-235 remain after 2,8...