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Uranium-238 undergoes eight consecutive a-emissions to give stable lead. In an uranium ore sample, all the a- particles are quickly stopped, becoming trapped 4He atoms. If analysis of a rock sample shows it to contain 6.36 x 10-5 cm3 of helium (1 atm, 298 K) and 2.56 x 10 of 238U per gram of rock, what is the estimated age of the rock? The half-life of uranium-238 is 4.51 x 109 years. (Express your answer in years.) Submit Answer Tries 0/99

Uranium-238 undergoes eight consecutive a-emissions to give stable lead. In an uranium ore sample, all the a- particles are quickly stopped, becoming trapped 4He atoms. If analysis of a rock sample shows it to contain 6.36 x 10-5 cm3 of helium (1 atm, 298 K) and 2.56 x 10 of 238U per gram of rock, what is the estimated age of the rock? The half-life of uranium-238 is 4.51 x 109 years. (Express your answer in years.) Submit Answer Tries 0/99

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 21.40QE
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Radio dating of U-238; I am not sure how to do this at all
Uranium-238 undergoes eight consecutive a-emissions to give stable lead. In an uranium ore sample, all the a- particles are quickly stopped, becoming trapped "He atoms. If analysis of a rock sample shows it to contain 6.36 x 10-5 cm3 of helium (1 atm, 298 K) and 2.56 x 10- of 238U per gram of rock, what is the estimated age of the rock? The half-life of uranium-238 is 4.51 x 109 years. (Express your answer in years.) Submit Answer Tries 0/99
Transcribed Image Text:Uranium-238 undergoes eight consecutive a-emissions to give stable lead. In an uranium ore sample, all the a- particles are quickly stopped, becoming trapped "He atoms. If analysis of a rock sample shows it to contain 6.36 x 10-5 cm3 of helium (1 atm, 298 K) and 2.56 x 10- of 238U per gram of rock, what is the estimated age of the rock? The half-life of uranium-238 is 4.51 x 109 years. (Express your answer in years.) Submit Answer Tries 0/99
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