A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 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 206 Pb in the rock, if it currently contains 1.530g of 238U ( this is the element) ? The Half life of 238 U is 4.47 •10 ^9 years.

Chemistry & Chemical Reactivity
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Chapter25: Nuclear Chemistry
Section25.5: Artifical Nuclear Reactions
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A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 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 206 Pb in the rock, if it currently contains 1.530g of 238U ( this is the element) ? The Half life of 238 U is 4.47 •10 ^9 years. 

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