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Constants ! Periodic Table Part A A first-order reaction ( AB) has a half-life of 15...
Item 12 > M Review | Constants 1 Periodic Table ecays Part B If the half-life...
Item 12 > M Review | Constants 1 Periodic Table ecays Part B If the half-life of Xe-133 is 5.2 h, what will be the activity of the initially 28-mCi sample after 15.6 h? Express your answer using two significant figures. VO AQ O ? mCi You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answers Request Answer Provide Feedback Next >
Part A Afirst-order reaction (A + B) has a hallife of 25 minutes. If the initial...
Part A Afirst-order reaction (A + B) has a hallife of 25 minutes. If the initial concentration of Als 0.800 M. what is the concentration of B after 50 minutes? (Do not use a calculator to solve this problem.) Express your answer to three significant figures. Template boundo do reset keyboard shortcuts is help AX M Submit Request Answer Provide Feedback
+ Half-life for First and Second Order Reactions 11 of 11 The half-life of a reaction,...
+ Half-life for First and Second Order Reactions 11 of 11 The half-life of a reaction, t1/2, is the time it takes for the reactant concentration A to decrease by half. For example, after one half-Me the concentration falls from the initial concentration (Alo to A\o/2, after a second half-life to Alo/4 after a third half-life to A./8, and so on. on Review Constants Periodic Table 11/25 For a second-order reaction, the half-life depends on the rate constant and the...
Constants I Periodic Table The current in a 120 V reading lamp is 2.2 A Part...
Constants I Periodic Table The current in a 120 V reading lamp is 2.2 A Part A If the cost of electrical energy is $0.075 per kilowatt-hour, how much does it cost to operate the light for an hour? Express your answer using two significant figures. Vα ΑΣφ dollars Cost = Request Answer Submit Next> Provide Feedback
Cyclopropane rearranges to form propene in the gas phase. Constants Periodic Table Part A - If...
Cyclopropane rearranges to form propene in the gas phase. Constants Periodic Table Part A - If the initial cyclopropane concetration is 0.0445 M. what is the cyclopropane concentration after 251 minutes? Express your answer with the appropriate units. CH, H₂CH₂ CH3-CH=CH μΑ ? Value Units The reaction is first order in cyclopropane and has a measured rate constant of 3.36 x 10-ºsat 720 K. You may want to reference (Pages 635-641) Section 14.4 while completing this problem. Submit Request Answer...
Constants Periodic Table Part A Take h to have an exact value of 6.63 x 10...
Constants Periodic Table Part A Take h to have an exact value of 6.63 x 10 MJ-s for significant figure purposes, and use he = 1.24 x 104 eV nm (three significant figures) When light of wavelength of 220 nm is incident on a metal surface, the maximum speed of the photoelectrons is 3.0x109 m/s. What is the work function of the metal in eV? Express your answer using two significant figures. Η ΑΣΦ ? eV Submit Request Answer Provide...
The decomposition of SO2Cl2 is first order in SO, Cl, and has a rate constant of...
The decomposition of SO2Cl2 is first order in SO, Cl, and has a rate constant of 1.38x10-4 5-1 at a certain temperature. Part A What is the half-life for this reaction? ΟΙ ΑΣφ ? 11/2= Submit Request Answer Part B How long will it take for the concentration of SO, Cl, to decrease to 25% of its initial concentration? Express your answer using two significant figures. ΟΙ ΑΣΦ ? Part C If the initial concentration of SO, Cl, is 1.00...
Review Constants Periodic Table Part A The rearrangement of methyl isonitrile (CH3NC) to acetonitrile (CH CN) is a firs...
Review Constants Periodic Table Part A The rearrangement of methyl isonitrile (CH3NC) to acetonitrile (CH CN) is a first-order reaction and has a rate constant of 5.11x105 s at 472 K Assume the initial concentration of CHs NC to be 3.80x10-2 M What is the half-life (in hours) of this reaction? hours to three significant figures. Express the time t1/23,77 hr You may want to reference (Pages 510 513) Section 13.6 while completing this problem. Submit Previous Answers Correct Since...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t 1/2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t 1/2 = 1 k[A ] 0 Part A A certain first-order reaction ( A→products ) has a rate constant of 9.90×10−3 s −1 at 45 ∘...
Constants Periodic Table A 1.5 kg ball has a position uncertainty of 0.36 m Part A...
Constants Periodic Table A 1.5 kg ball has a position uncertainty of 0.36 m Part A What is its minimum momentum uncertainty? Express your answer using two significant figures. V AXP ? P kg.m/s Submit Request Answer Provide Feedback Next >
Item 12 > M Review | Constants 1 Periodic Table ecays Part B If the half-life of Xe-133 is 5.2 h, what will be the activity of the initially 28-mCi sample after 15.6 h? Express your answer using two significant figures. VO AQ O ? mCi You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answers Request Answer Provide Feedback Next >
Part A Afirst-order reaction (A + B) has a hallife of 25 minutes. If the initial concentration of Als 0.800 M. what is the concentration of B after 50 minutes? (Do not use a calculator to solve this problem.) Express your answer to three significant figures. Template boundo do reset keyboard shortcuts is help AX M Submit Request Answer Provide Feedback
+ Half-life for First and Second Order Reactions 11 of 11 The half-life of a reaction, t1/2, is the time it takes for the reactant concentration A to decrease by half. For example, after one half-Me the concentration falls from the initial concentration (Alo to A\o/2, after a second half-life to Alo/4 after a third half-life to A./8, and so on. on Review Constants Periodic Table 11/25 For a second-order reaction, the half-life depends on the rate constant and the...
Constants I Periodic Table The current in a 120 V reading lamp is 2.2 A Part A If the cost of electrical energy is $0.075 per kilowatt-hour, how much does it cost to operate the light for an hour? Express your answer using two significant figures. Vα ΑΣφ dollars Cost = Request Answer Submit Next> Provide Feedback
Cyclopropane rearranges to form propene in the gas phase. Constants Periodic Table Part A - If the initial cyclopropane concetration is 0.0445 M. what is the cyclopropane concentration after 251 minutes? Express your answer with the appropriate units. CH, H₂CH₂ CH3-CH=CH μΑ ? Value Units The reaction is first order in cyclopropane and has a measured rate constant of 3.36 x 10-ºsat 720 K. You may want to reference (Pages 635-641) Section 14.4 while completing this problem. Submit Request Answer...
Constants Periodic Table Part A Take h to have an exact value of 6.63 x 10 MJ-s for significant figure purposes, and use he = 1.24 x 104 eV nm (three significant figures) When light of wavelength of 220 nm is incident on a metal surface, the maximum speed of the photoelectrons is 3.0x109 m/s. What is the work function of the metal in eV? Express your answer using two significant figures. Η ΑΣΦ ? eV Submit Request Answer Provide...
The decomposition of SO2Cl2 is first order in SO, Cl, and has a rate constant of 1.38x10-4 5-1 at a certain temperature. Part A What is the half-life for this reaction? ΟΙ ΑΣφ ? 11/2= Submit Request Answer Part B How long will it take for the concentration of SO, Cl, to decrease to 25% of its initial concentration? Express your answer using two significant figures. ΟΙ ΑΣΦ ? Part C If the initial concentration of SO, Cl, is 1.00...
Review Constants Periodic Table Part A The rearrangement of methyl isonitrile (CH3NC) to acetonitrile (CH CN) is a first-order reaction and has a rate constant of 5.11x105 s at 472 K Assume the initial concentration of CHs NC to be 3.80x10-2 M What is the half-life (in hours) of this reaction? hours to three significant figures. Express the time t1/23,77 hr You may want to reference (Pages 510 513) Section 13.6 while completing this problem. Submit Previous Answers Correct Since...
Constants Periodic Table A 1.5 kg ball has a position uncertainty of 0.36 m Part A What is its minimum momentum uncertainty? Express your answer using two significant figures. V AXP ? P kg.m/s Submit Request Answer Provide Feedback Next >
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