Question: A 1.00 g sample of samarium emits alpha particles at a rate of 120 particles. The responsible isotope is 147Sm, whose natural abundance in bulk

A 1.00 g sample of samarium emits alpha particles at a rate of 120 particles. The responsible isotope is 147Sm, whose natural abundance in bulk samarium is 15.0 %. Calculate the half-life for the decay process.

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