The amount of a sample remaining after t days is given by the equation P(t) = A 112 1.5 days 2.5 days 9.4 days 21.1 days ³.

Question

The amount of a sample remaining after t days is given by the equation P(t) = A
112
1.5 days
2.5 days
9.4 days
21.1 days
³.
where A is the initial amount of
the sample and h is the half-life, in days, of the substance. A sample contains 18% of its original amount of Radon-
222. The half-life of Radon-222 is about 3.8 days. Which is the best estimate for the age of the sample?

Kunduz · Accepted Answer

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