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a rock is found to contain 2.2 grams of uranium-234, a radioactive isotope. if the rock has undergone 2.75 half lives, what was the original amount of uranium-235 in the rock and how old is the rock?

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  • a rock is found to contain 2.2 grams of uranium-234, a radioactive isotope. if the rock has undergone 2.75 half lives, what was the original amount of uranium-235 in the rock and how old is the rock?


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Anonymous482305
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