41. | A sample of 2.0 X 1010 atoms that decay by alpha emission has a half-life of one hour. How many alpha particles ar
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41. | A sample of 2.0 X 1010 atoms that decay by alpha emission has a half-life of one hour. How many alpha particles ar
41. | A sample of 2.0 X 1010 atoms that decay by alpha emission has a half-life of one hour. How many alpha particles are emit- ted between t 45 min and t = 120 min? =
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