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A rock sample originally contains 4.94 mg of 238U. How much 206Pb will be in the rock sample when it is 7.5 × 108 years old? The half-life of uranium-238 is 4.51 × 10⁹ years. mg

A rock sample originally contains 4.94 mg of 238U. How much 206Pb will be in the rock sample when it is 7.5 × 108 years old? The half-life of uranium-238 is 4.51 × 10⁹ years. mg

Chemistry
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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Enter your answer in the provided box. A rock sample originally contains 4.94 mg of 238 U. How much 206Pb will be in the rock sample when it is 7.5 x 108 years old? The half-life of uranium-238 is 4.51 × 10⁹ years. mg
Transcribed Image Text:Enter your answer in the provided box. A rock sample originally contains 4.94 mg of 238 U. How much 206Pb will be in the rock sample when it is 7.5 x 108 years old? The half-life of uranium-238 is 4.51 × 10⁹ years. mg
Be sure to answer all parts. A wooden artifact has a ¹4C activity of 14.4 disintegrations per minute, compared to 27.5 disintegrations per minute for live wood. Given that the half-life of 14C is 5715 years, determine the age of the artifact. Enter your answer in scientific notation. 4.792 X 3
Transcribed Image Text:Be sure to answer all parts. A wooden artifact has a ¹4C activity of 14.4 disintegrations per minute, compared to 27.5 disintegrations per minute for live wood. Given that the half-life of 14C is 5715 years, determine the age of the artifact. Enter your answer in scientific notation. 4.792 X 3
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