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NinjaRick NinjaRick
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What would the atom ratio of 206Pb to 238U be in a uranium mineral from a rock that is 1.0 × 109 years old?  t1/2(238U) = 4.5 × 109 yr.

▸ 0.14

▸ 0.16

▸ 0.22

▸ 0.86

▸ 1.16
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Chemistry

Chemistry


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