ch42-p062 - 62. The original amount of 238U the rock...

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62. The original amount of 238 U the rock contains is given by mm e e t 0 2 260 10 6 447 10 9 370 385 == = × F H I K × F H I K λ .. ln / . mg mg. yy b g bg Thus, the amount of lead produced is
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