Problem 14.99Americium-241 is used in smoke detectors. It has a first order rate constant for radioactive-1decay of k = 1.6 x 10-3 yr ¹. By contrast, phophorus-32, which is used for the analysisof metabolic pathways, has a rate constant for radioactive decay of k= 0.050 day ¹▾How much of a 2.50 mg sample of americium remains after 3 half-lives?Express your answer in milligrams to two significant figures.▾TL =SubmitPart ETIL =How much of a 1.51 mg sample of phophorus remains after 3 half-lives?Express your answer in milligrams to two significant figures.▾ Part FhiTemplates Symbols undo repo reset keyboard shortcuts HelpnSubmitTIL =Request AnswerTemplates Symbols undo redo Resef keyboard shortcuts Help..Part GHow much of a 1.00 mg sample of americium remains after 4 days?Express your answer in milligrams to two significant figures.SubmitRequest AnswerATemplates Symbols Undo redo reset keyboard shortcuts Helpw7Previous Answers Request AnswerHow much of a 1.35 mg sample of phophorus remains after 4 days?Express your answer in milligrams to two significant figures.Templates Symbols undo' redo Peser keyboard shortcuts HelpPearsonmgmgmg22 of 36Review | Constants | Periodic Table

1.) The radioactive decay is a first order reaction, so to calculate half life of given elements,…

Americium-241 is used in smoke detectors. It has a first order rate constant for radioactive decay of k 1.6 x 10yr By contrast, phophorus-32, which is used for the analysis of metabolic pathways, has a rate constant for radioactive decay of 0.050 day Part A What is the half-life of americium-241? Express your answer in years to two significant figures. ¹1/2 Submit Part B Submit What is the half-life of phophorus-32? Express your answer in days to two significant figures. Part C Templates Symbols Undo redo Reset keyboard shortcuts help Request Answer Templates Symbols Undo redo Reset keyboard shortcuts Help Submit Request Answer Which one decays at a faster rate? O americium-241 phophorus-32 Request Answer yr days

Americium-241 is used in smoke detectors. It has a first order rate constant for radioactive decay of k 1.6 x 10yr By contrast, phophorus-32, which is used for the analysis of metabolic pathways, has a rate constant for radioactive decay of 0.050 day Part A What is the half-life of americium-241? Express your answer in years to two significant figures. ¹1/2 Submit Part B Submit What is the half-life of phophorus-32? Express your answer in days to two significant figures. Part C Templates Symbols Undo redo Reset keyboard shortcuts help Request Answer Templates Symbols Undo redo Reset keyboard shortcuts Help Submit Request Answer Which one decays at a faster rate? O americium-241 phophorus-32 Request Answer yr days

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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