An igneous rock contains a Pb-206/U-238 mass ratio of 0.372. How old is the rock?(U-238 decays into

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An igneous rock contains a Pb-206/U-238 mass ratio of 0.372. How old is the rock? (U-238 decays into Pb-206 with a half-life of 4.5 * 10⁹ yr.)

a) 4.50 * 10⁹ yr

b) 6.42 * 10⁹ yr

c) 2.05 * 10⁹ yr

d) 2.32 * 10⁹ yr

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Chemistry A Molecular Approach

ISBN: 9780134874371

5th Edition

Authors: Nivaldo Tro

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Question Posted: Nov 25, 2023 01:24 AM

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An igneous rock contains a Pb-206/U-238 mass ratio of 0.372. How old is the rock?(U-238 decays into

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