polonium-210 is a radioactive element. after 65 weeks, there are 6 grams of polonium-210 left. how much polonium-210 was there to begin with if it has a half- life of 13 weeks
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The half-life of a radioactive substance is 25 ... What percentage of a sample of Bi-210 will remain after 10 ... If there is a 5 gram sample of Ra-226 in a tube, how much will remain after.
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