In a 3 X 109 -year-old rock that originally contained some 238U , which has a half-life of 4.5 X 109 years, we expect to find some 238U remaining in it. Why are 226Ra , 222Rn , and 210 Po also found in such a rock, even though they have much shorter half-lives (1600 years, 3.8 days, and 138 days, respectively)?

Half-life is defined as the time in which the original numbers of nuclei are decayed to half. In the…

Answered: In a 3 X 109 -year-old rock that…

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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In a 3 X 10⁹ -year-old rock that originally contained some ²³⁸U , which has a half-life of 4.5 X 10⁹ years, we expect to find some ²³⁸U remaining in it. Why are ²²⁶Ra , ²²²Rn , and ²¹⁰ Po also found in such a rock, even though they have much shorter half-lives (1600 years, 3.8 days, and 138 days, respectively)?

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