Question: A sample of a phosphorus compound contains phosphorus-32. This sample of radioactive isotope is decaying at the rate of 6.0 1012 disintegrations per second.

A sample of a phosphorus compound contains phosphorus-32. This sample of radioactive isotope is decaying at the rate of 6.0 × 1012 disintegrations per second. How many grams of 32P are in the sample? The half-life of 32P is 14.3d.

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