Potassium-40 decays to argon-40 with a half-life of 1.27 109 yr. What is the age of

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Potassium-40 decays to argon-40 with a half-life of 1.27 × 109 yr. What is the age of a rock in which the mass ratio of 40Ar to 40K is 4.2?

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Chemistry The Central Science

ISBN: 978-0321696724

12th edition

Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward

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Question Posted: Apr 19, 2016 08:19 AM

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Potassium-40 decays to argon-40 with a half-life of 1.27 109 yr. What is the age of

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