Chemistry, 01.11.2019 21:31 dokithefursona

After 32 days, 5 milligrams of an 80-milligram sample of a radioactive isotope remains unchanged. what is the half-life of this element?
(1) 8 days (3) 16 days
(2) 2 days (4) 4 days

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After 32 days, 5 milligrams of an 80-milligram sample of a radioactive isotope remains unchanged. wh...