A rock from australia was found to contain 0438 g of pb-206
A rock from Australia was found to contain 0.438 g of Pb-206 to every 1.00 g of U-238. Assuming that the rock did not contain any Pb-206 at the time of its formation how old is the rock?
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a rock from australia was found to contain 0438 g of pb-206 to every 100 g of u-238 assuming that the rock did not
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suppose a grower sprays 72 kg of water at 0 degc onto a fruit treea how much heat is released by the water when it
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