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Chemistry, 09.12.2021 04:30 chaitanyac90

A rock formed with 1000 atoms of a radioactive parent element, but contains only 250 radioactive parent atoms today. If the half-life for the radioactive element is one million years, how old is the rock

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A rock formed with 1000 atoms of a radioactive parent element, but contains only 250 radioactive par...
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