mollyshean mollyshean
  • 13-09-2022
  • Chemistry
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A moon rock collected by a U.S. Apollo mission is estimated to be 3.90 billion years old by uranium/lead dating. Assuming that the rock did not contain any lead when it was formed, what is the current mass of Pb206 in the rock, if it currently contains 1.300 g of U238 ? The half-life of U238 is 4.47×109 years .

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