I Review I Constants Periodic TableThe first-order rate constant for the decomposition of N2O..2N205 (g)+ANO2(g) + O2(g)Part Aat 70°C is 6.82 x 10s. Suppose we start with 2.30x10 mol of N20: (g) in a volume of 2.4 LHow many moles of N2O, will remain after 4.0 min ?Express the amount in moles to two significant digits.PesTemplates Symbols undo regdokeyboard shortcuts HelpT4 = 3.6• 103molSubmitPrevlous Answere Requeet AnewerX Incorrect; Try Again; 7 attempts remainingPart BHow many minutes will it take for the quantity of N,O, to drop to 1.7x102 mol ?Express your answer using two significant figures.PesTemplates Symbols undo redo Teset keyboard shortcuts Helpt= 1.5minSubmitPrevlous Answere Requeet Anewerx Incorrect; Try Again; 7 attempts remaining• Part CWhat is the half-life of N2O5 at 70°C?Express the half-life in seconds to three significant digits.ti/2= 102 sSubmitPrevloun Anawerev CorrectGiven that In(n /no) = -kt, we can derive an equation that describes the half-life, t1/2. which is the time required for the substance to be depleted to half the amount:In(0.5) = -kt/2If you multiply both sides by –1, the natural log ratio becomes inverted, -In(0.5) = In(2). Therefore, the half-life is equal to the natural log of 2 divided by the rate constant, ti/2 = In(2)/k. Knowing the value of the rate constant allows you to solve for thehalf-life without knowing any other properties; likewise, knowing the value of the half-life allows you to solve for the rate constant.

Item 8 The frst-order rate constant for the decomposition of NOs. 2N,0: (R) -+4NO:(r) + Os(r) at 70°C is 6.82 x 10 s!. Suppose vre start weh 2.30«10 mol of N;Os (R) in a volume of 24L. • Part A How many moles of N;Os wil remain ater 4.0 min ? Express the amount in moles to two significant digits. Drdó rạdo tesất kayboard shortouts Halp 3.6 • 10~³ mol Previoun Anwera Regant Anwr Submit x Incorrect: Try Again; 7 atempts remaining Part 8 How many minutes wil it take for the quantity of N,0, to drop to 1.7x10 mol ? Express your answer using two significant figures. yanes uhdo rego feset keyboard shortouts Help 1.5 min Prevtoun Anwera Beauant Antwer Submit x Incorrect; Try Again; 7 attempts remaining Part C What is the halfife of NyO, at 70°C? Express the half-ife in seconds to three significant digits. tya" 102 Previous Anewer

Item 8 The frst-order rate constant for the decomposition of NOs. 2N,0: (R) -+4NO:(r) + Os(r) at 70°C is 6.82 x 10 s!. Suppose vre start weh 2.30«10 mol of N;Os (R) in a volume of 24L. • Part A How many moles of N;Os wil remain ater 4.0 min ? Express the amount in moles to two significant digits. Drdó rạdo tesất kayboard shortouts Halp 3.6 • 10~³ mol Previoun Anwera Regant Anwr Submit x Incorrect: Try Again; 7 atempts remaining Part 8 How many minutes wil it take for the quantity of N,0, to drop to 1.7x10 mol ? Express your answer using two significant figures. yanes uhdo rego feset keyboard shortouts Help 1.5 min Prevtoun Anwera Beauant Antwer Submit x Incorrect; Try Again; 7 attempts remaining Part C What is the halfife of NyO, at 70°C? Express the half-ife in seconds to three significant digits. tya" 102 Previous Anewer

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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