A rock is a mixture of uranium-238 and lead-206 the molar
A rock is a mixture of Uranium-238 and Lead-206. The molar ratio of Lead to Uranium is .1956. If the half-life for Uranium-238 is 4.5e9 years, how old (in years) is the rock?
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a rock is a mixture of uranium-238 and lead-206 the molar ratio of lead to uranium is 1956 if the half-life for
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