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Answers by Kanagalingam

Answers by Kanagalingam
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The radioisotope potassium-40 decays to argon-40 by positron emission with a half-life of 1.3 Ã 109 yr. A sample of moon rock was found to contain 78 argon-40 atoms for every 22 potassium-40 atoms. The
answered Feb 12, 2021
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