The half life for the radioactive decay ofU 238 is 4.5 billion years and is independentof initial concentration.Part AHow long will it take for 18 % of the U-238 atoms in a sample of U-238 to decay?Express your answer using two significant figures.VE ΑΣΦSubmitPart BN=Request AnswerSubmit17 ΑΣΦΑIf a sample of U 238 initially contained 1.2×1018 atoms and was formed 5.4 billion years ago, how manyU 238 atoms does it contain today?Express your answer using two significant figures.Request Answer?Pearsonyr?atomsCopyright © 2023 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions(Constants PeriooContact Us

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Part A How long will it take for 18 % of the U 238 atoms in a sample of U Express your answer using two significant figures. 231 1951 ΑΣΦΑ Submit Part B N Request Answer Submit If a sample of U-238 initially contained 1.2x1018 atoms and was formed 5 U 238 atoms does it contain today? Express your answer using two significant figures. V ΑΣΦ Request Ar wer ? P Pearson yr www ? atoms ucation Inc. All rights reserved. Terms of Use | Privacy Policy | Permission

Part A How long will it take for 18 % of the U 238 atoms in a sample of U Express your answer using two significant figures. 231 1951 ΑΣΦΑ Submit Part B N Request Answer Submit If a sample of U-238 initially contained 1.2x1018 atoms and was formed 5 U 238 atoms does it contain today? Express your answer using two significant figures. V ΑΣΦ Request Ar wer ? P Pearson yr www ? atoms ucation Inc. All rights reserved. Terms of Use | Privacy Policy | Permission

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter20: Kinetics

Section: Chapter Questions

Problem 20.88E

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