Generation5972 Generation5972

18-04-2024
Chemistry

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Potassium 40 has a half-life of 1.2 * 7 of the nine years decay to argon 40. A sample of rock contains 1.35 * 10 to the -6 moles of potassium 40 and 6.81 * 10 of the -7 moles of argon 40. What is the age of the rock in years?

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