Isotope A has a half-life of 10 days. It decays into isotope B, which is also ra

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Isotope A has a half-life of 10 days. It decays into isotope B, which is also radioactive with a half-life of 100 days. Assume that at time equal to zero, a sample of pure isotope A has a radioactivity rate of 1000 cts/min.

Isotope A has a half-life of 10 days. It decays into isotope B, which is also radioactive with a half-life of 100 days. Assume that at time equal to zero, a sample of pure isotope A has a radioactivity rate of 1000 cts/min.

• Estimate the total radioactivity rate of the sample at the end of 10 days. Note that the sample now contains both isotopes. Be sure to provide arguments for your estimate.

• If the half-life of isotope B was comparable to that of A, would your method of estimate be valid?

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