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The desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0.128/s at 150 K. Part A What is the half-life of the desorption reaction? t1/ 5.41 s Submit Previous Answers v Correct Part B If the surface is initially completely covered with n-butane at 150 K, how long will it take for 25% of the molecules to desorb? Express your answer using two significant figures. t = 2.2 s Submit Previous Answers v Correct Part C For 50% to desorb? Express your answer using two significant figures. t = 5.4 s Submit Previous Answers v Correct Part D If the surface is initially completely covered, what fraction will remain covered after 14 s ? Express your answer using two significant figures. Π ΑΣ φ. 0.17 Submit Previous Answers Request Answer x Incorrect; Try Again; 3 attempts remaining Part E After 20 s ? Express your answer using two significant figures. ΗΑΣΦ |0.077 %

The desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0.128/s at 150 K. Part A What is the half-life of the desorption reaction? t1/ 5.41 s Submit Previous Answers v Correct Part B If the surface is initially completely covered with n-butane at 150 K, how long will it take for 25% of the molecules to desorb? Express your answer using two significant figures. t = 2.2 s Submit Previous Answers v Correct Part C For 50% to desorb? Express your answer using two significant figures. t = 5.4 s Submit Previous Answers v Correct Part D If the surface is initially completely covered, what fraction will remain covered after 14 s ? Express your answer using two significant figures. Π ΑΣ φ. 0.17 Submit Previous Answers Request Answer x Incorrect; Try Again; 3 attempts remaining Part E After 20 s ? Express your answer using two significant figures. ΗΑΣΦ |0.077 %

Chemistry
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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The desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0.128/s at 150 K. Part A What is the half-life of the desorption reaction? t1/ 5.41 s Submit Previous Answers v Correct Part B If the surface is initially completely covered with n-butane at 150 K, how long will it take for 25% of the molecules to desorb? Express your answer using two significant figures. t = 2.2 s Submit Previous Answers v Correct Part C For 50% to desorb? Express your answer using two significant figures. t = 5.4 s Submit Previous Answers v Correct Part D If the surface is initially completely covered, what fraction will remain covered after 14 s ? Express your answer using two significant figures. Π ΑΣ φ. 0.17 Submit Previous Answers Request Answer x Incorrect; Try Again; 3 attempts remaining Part E After 20 s ? Express your answer using two significant figures. ΗΑΣΦ |0.077 %
Transcribed Image Text:The desorption of a single molecular layer of n-butane from a single crystal of aluminum oxide was found to be first order with a rate constant of 0.128/s at 150 K. Part A What is the half-life of the desorption reaction? t1/ 5.41 s Submit Previous Answers v Correct Part B If the surface is initially completely covered with n-butane at 150 K, how long will it take for 25% of the molecules to desorb? Express your answer using two significant figures. t = 2.2 s Submit Previous Answers v Correct Part C For 50% to desorb? Express your answer using two significant figures. t = 5.4 s Submit Previous Answers v Correct Part D If the surface is initially completely covered, what fraction will remain covered after 14 s ? Express your answer using two significant figures. Π ΑΣ φ. 0.17 Submit Previous Answers Request Answer x Incorrect; Try Again; 3 attempts remaining Part E After 20 s ? Express your answer using two significant figures. ΗΑΣΦ |0.077 %
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