Mathematics, 16.10.2019 12:30 ajime

Asample originally contains 21 grams of a radioactive isotope. after 45 days, 17.3 grams of the isotope remain in the sample.

what is the half-life of the isotope?

enter your answer in the box. round your answer to the nearest day.

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Asample originally contains 21 grams of a radioactive isotope. after 45 days, 17.3 grams of the isot...