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A rock contains 0.313 mg Pb-206 for every 1.000 mg of U-238. Assuming that the rock contained no lead initially, calculate the age of the rock. The half-life for U-238 is 4.5 x 10 years. (Hint: you will need the percent of each isotope in the sample) Enter your answer using scientific notation entered using the E format. (For example, 6.022E23 represents 6.022 x 1023). type your answer... years

A rock contains 0.313 mg Pb-206 for every 1.000 mg of U-238. Assuming that the rock contained no lead initially, calculate the age of the rock. The half-life for U-238 is 4.5 x 10 years. (Hint: you will need the percent of each isotope in the sample) Enter your answer using scientific notation entered using the E format. (For example, 6.022E23 represents 6.022 x 1023). type your answer... years

Chemistry
Chemistry
9th Edition
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Steven S. Zumdahl
Chapter19: The Nucleus: A Chemist's View
Section: Chapter Questions
Problem 27E
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A rock contains 0.313 mg Pb-206 for every 1.000 mg of U-238. Assuming that the rock contained no lead initially, calculate the age of the rock. The half-life for U-238 is 4.5 x 10 years. (Hint: you will need the percent of each isotope in the sample) Enter your answer using scientific notation entered using the E format. (For example, 6.022E23 represents 6.022 x 1023). type your answer... years
Transcribed Image Text:A rock contains 0.313 mg Pb-206 for every 1.000 mg of U-238. Assuming that the rock contained no lead initially, calculate the age of the rock. The half-life for U-238 is 4.5 x 10 years. (Hint: you will need the percent of each isotope in the sample) Enter your answer using scientific notation entered using the E format. (For example, 6.022E23 represents 6.022 x 1023). type your answer... years
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