Question
Asked Apr 28, 2019
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A rock contains 0.438 g of Pb-206 to every 1.00 g of U-238. The rock
contained no lead at the time of its formation. How old is the rock?
t1/2= 4.5 x 108
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Expert Answer

Step 1

The amount of uranium-238 present initially is calculated as,

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Step 2

The age of the rock is calculated by ident...

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