Exercise 2. Determine the half-life of an element If you start with 128 parent atoms of a radioactive element which has a half-life of 30 million years, then how many total millions of years does each of the following represent? SCENARIO # of half-lives? 64 parent atoms (50 %) remaining 32 parent atoms (25%) remaining 16 parent atoms (12.5%) remaining 8 parent atoms (6.25%) remaining 20 parent atoms (%) remaining # of million yrs. 12

Exercise 2. Determine the half-life of an element If you start with 128 parent atoms of a radioactive element which has a half-life of 30 million years, then how many total millions of years does each of the following represent? SCENARIO # of half-lives? 64 parent atoms (50 %) remaining 32 parent atoms (25%) remaining 16 parent atoms (12.5%) remaining 8 parent atoms (6.25%) remaining 20 parent atoms (%) remaining # of million yrs. 12

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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Question 10
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Intercomverting Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 5.60 mg sample would be left after 88.1 days? Round your answer to 2 significant digits. Also, be sure your answer has a unit symbol. Explanation Check O 2021 McGraw-Hill Education. All Rights Reserved Terms of Use Privacy Ac MAY 10 W
Problem 6. Determine the actual mass of Os-171 (in g/mol) that is produced from the alpha decay of Pt-175 if the reaction released -5.4x10° kJ/mol of energy. (Actual mass (g/mol): He-43D4.003; Pt- 175-174.972)
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