A rock is found to have 12.75 mg of 238U and 1.19 mg of 206 Pb. Determine the age of the rock. The half-life of 238U is 4.51 x 10⁹ years. 7.5 x 108 years 5.8 x 108 years 4.7 x 108 years 9.7 x 108 years 3.9 x 108 years 6.6 x 108 years

A rock is found to have 12.75 mg of 238U and 1.19 mg of 206 Pb. Determine the age of the rock. The half-life of 238U is 4.51 x 10⁹ years. 7.5 x 108 years 5.8 x 108 years 4.7 x 108 years 9.7 x 108 years 3.9 x 108 years 6.6 x 108 years

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter11: Nuclear Chemistry

Section: Chapter Questions

Problem 11.45EP

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Question

A rock is found to have 12.75 mg of 238U and 1.19 mg of 206 Pb. Determine the age of the
rock. The half-life of 238U is 4.51 x 10⁹
years.
7.5 x 108 years
5.8 x 108 years
4.7 x 108 years
9.7 x 108 years
3.9 x 108 years
6.6 x 108 years

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