Advanced Placement (AP), 07.12.2020 19:20 kieante01
A radioactive substance has a half-life of 5 million years. What is the age of a rock in which 25% of the original radioactive atoms remain? You must show your work or explain how you came up with your answer for full credit.
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A radioactive substance has a half-life of 5 million years. What is the age of a rock in which 25% o...
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