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104. Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hard ens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock contains 83.2% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of U-238.) How old is the rock?
104. Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hard ens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock contains 83.2% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of U-238.) How old is the rock?
Reid WolffLv2
3 Jul 2018
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