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A sample of 1.3e10 atoms that decay by alpha emission has a half-life of 100 min. How many alpha particles are emitted between t = 50 min and t = 200...

A sample of 1.3e10 atoms that decay by alpha emission has a half-life of 100 min. How many alpha particles are emitted between t = 50 min and t = 200 min?

This question was asked on Apr 30, 2010.

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