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The Radioactive Element Polonium Decays According to the Law

Question 13

Multiple Choice

The radioactive element polonium decays according to the law The radioactive element polonium decays according to the law   where Q​<sub>0</sub> is the initial amount and the time t is measured in days. If the amount of polonium left after 560 days is 40 mg, what was the initial amount present? ​ A)  The initial amount was 645 mg B)  The initial amount was 642 mg C)  The initial amount was 651 mg D)  The initial amount was 640 mg where Q​0 is the initial amount and the time t is measured in days. If the amount of polonium left after 560 days is 40 mg, what was the initial amount present? ​


A) The initial amount was 645 mg
B) The initial amount was 642 mg
C) The initial amount was 651 mg
D) The initial amount was 640 mg

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