Chemistry, 16.03.2020 17:04, cj9508

Potassium-40 is radioactive and decays into Argon-40. The half-life of Potassium-40 is 1.3 billion years. You measure the # of atom of each isotope and find 75 atoms of Potassium-40 and 525 atoms of Argon-40. How many half-lives have passed since the rock formed?

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Potassium-40 is radioactive and decays into Argon-40. The half-life of Potassium-40 is 1.3 billion y...