You are studying a sample of granite that is about 2.1 billion years old. You know it contains some amount of uranium-235, the radioactive parent isotope that decays to its daughter, lead-207. The half-life of uranium-235 is about 700 million years. Based on the number of half lives that have elapsed since the granite fomed (you need to determine this), about _____% of the uranium-235 that was in the granite at its formation is still present in the rock and has not yet decayed into lead-207. (Enter a numeric value between 0 and 100)
You are studying a sample of granite that is about 2.1 billion years old. You know it contains some amount of uranium-235, the radioactive parent isotope that decays to its daughter, lead-207. The half-life of uranium-235 is about 700 million years. Based on the number of half lives that have elapsed since the granite fomed (you need to determine this), about _____% of the uranium-235 that was in the granite at its formation is still present in the rock and has not yet decayed into lead-207. (Enter a numeric value between 0 and 100)
Chemistry
10th Edition
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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You are studying a sample of granite that is about 2.1 billion years old.
You know it contains some amount of uranium-235, the radioactive parent isotope that decays to its daughter, lead-207. The half-life of uranium-235 is about 700 million years.
Based on the number of half lives that have elapsed since the granite fomed (you need to determine this), about _____% of the uranium-235 that was in the granite at its formation is still present in the rock and has not yet decayed into lead-207. (Enter a numeric value between 0 and 100)
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