Physics, 24.08.2019 20:30 coolcat3190
The half-life of a certain isotope is 15 minutes. how much of a 400 g sample will remain after 90 minutes? 12.5 g6.25 g26.7 g66.7 g25 g
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The half-life of a certain isotope is 15 minutes. how much of a 400 g sample will remain after 90 mi...
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