Problem: Enter your answer in the provided box.A rock sample originally contains 4.78 mg of  238U. How much 206Pb will be in the rock sample when it is 1.7 x 108 years old?

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Enter your answer in the provided box.

A rock sample originally contains 4.78 mg of  238U. How much 206Pb will be in the rock sample when it is 1.7 x 108 years old?

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