Chemistry, 27.02.2021 18:40 velazquezemmy45

The half-life for the radioactive decay of Ce−141 is 32.5 days. If a sample has an activity of 4.0 μCi after 130 d have elapsed, what was the initial activity, in microcuries, of the sample? Express your answer using two significant figures.

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The half-life for the radioactive decay of Ce−141 is 32.5 days. If a sample has an activity of 4.0 μ...