Mathematics, 28.07.2019 12:00 kiani46

Terbium-160 has a half-life of about 72 days. after 396 days, about how many milligrams of a 220 mg sample will remain? a. 5 mg b. 12 mg c. 40 mg d. 194 mg

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Terbium-160 has a half-life of about 72 days. after 396 days, about how many milligrams of a 220 mg...