Graph A sample of polonium-214 originally has a mass of
Chapter , Problem 18(choose chapter or problem)
Graph A sample of polonium-214 originally has a mass of 1.0 g. Express the mass remaining as a percent of the original sample after a period of one, two, and three half-lives. Graph the percent remaining versus the number of half-lives. Approximately how much time has elapsed when 20% of the original sample remains?
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