A rock contains 0.684 mg of 200Pb for every 1.000 mg of 238U present. Assuming that no lead was originally present, that all the 200Pb formed over the years has remained in the rock, and that the number of nuclides in intermediate stages of decay between 238U and 206pb is negligible, calculate the age of the rock. (For 238U, t,12 = 4.5x10° years.)
A rock contains 0.684 mg of 200Pb for every 1.000 mg of 238U present. Assuming that no lead was originally present, that all the 200Pb formed over the years has remained in the rock, and that the number of nuclides in intermediate stages of decay between 238U and 206pb is negligible, calculate the age of the rock. (For 238U, t,12 = 4.5x10° years.)
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 21.30QE
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