A rock contains 270 µmol of 238U (t1/2 = 4.5 x 109 yr) and 110 µmol of 206Pb . a. If you assume that all of the 206Pb came from the decay of 238U , what was the initial amount, A0, of 238U? (i.e., assume the µmol of 206Pb used to be 238U ) b. Estimate the rock’s age.
A rock contains 270 µmol of 238U (t1/2 = 4.5 x 109 yr) and 110 µmol of 206Pb . a. If you assume that all of the 206Pb came from the decay of 238U , what was the initial amount, A0, of 238U? (i.e., assume the µmol of 206Pb used to be 238U ) b. Estimate the rock’s age.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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A rock contains 270 µmol of 238U (t1/2 = 4.5 x 109 yr) and 110 µmol of 206Pb .
a. If you assume that all of the 206Pb came from the decay of 238U , what was the initial amount, A0, of 238U? (i.e., assume the µmol of 206Pb used to be 238U )
b. Estimate the rock’s age.
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