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How old is a rock that contains 0.065 g of uranium-238 (t₁/2 = 4.5 x 10⁹ years) and 0.023 g of lead-206? You may assume that all the lead-206 present came from uranium- 238 decay). 2.0 x 10⁹ years old 1.5 x 1010 years old 6.7 x 10⁹ years old 2.2 x 10⁹ years old 1.8 x 1010 years old

How old is a rock that contains 0.065 g of uranium-238 (t₁/2 = 4.5 x 10⁹ years) and 0.023 g of lead-206? You may assume that all the lead-206 present came from uranium- 238 decay). 2.0 x 10⁹ years old 1.5 x 1010 years old 6.7 x 10⁹ years old 2.2 x 10⁹ years old 1.8 x 1010 years old

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter21: Nuclear Chemistry
Section: Chapter Questions
Problem 21.43QE
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How old is a rock that contains 0.065 g of uranium-238 (t₁/2 = 4.5 x 10⁹ years) and 0.023 g of lead-206? You may assume that all the lead-206 present came from uranium- 238 decay). 2.0 x 10⁹ years old 1.5 x 1010 years old 6.7 x 10⁹ years old 2.2 x 10⁹ years old 1.8 x 1010 years old
Transcribed Image Text:How old is a rock that contains 0.065 g of uranium-238 (t₁/2 = 4.5 x 10⁹ years) and 0.023 g of lead-206? You may assume that all the lead-206 present came from uranium- 238 decay). 2.0 x 10⁹ years old 1.5 x 1010 years old 6.7 x 10⁹ years old 2.2 x 10⁹ years old 1.8 x 1010 years old
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