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Consider the first-order reaction C₂H6 → 2 CH3 at 500°C where its half-life is 21 minutes. (a) How long does it take for the concentration of C₂H6 to drop from 6.6 mM to 3.1 mm? 4.0 23 min From 3.1 mM to 1.8 mm? 4.0 17 min (b) If the original concentration of ethane is 4.5 mm, what is the concentration after 2.5 hours? 4.0 3.2e2 XmM

Consider the first-order reaction C₂H6 → 2 CH3 at 500°C where its half-life is 21 minutes. (a) How long does it take for the concentration of C₂H6 to drop from 6.6 mM to 3.1 mm? 4.0 23 min From 3.1 mM to 1.8 mm? 4.0 17 min (b) If the original concentration of ethane is 4.5 mm, what is the concentration after 2.5 hours? 4.0 3.2e2 XmM

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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Consider the first-order reaction C₂H6 → 2 CH3 at 500°C where its half-life is 21 minutes. (a) How long does it take for the concentration C₂H6 to drop from 6.6 mM to 3.1 mM? 4.0 23 min From 3.1 mM to 1.8 mM? 4.0 17 min (b) If the original concentration of ethane is 4.5 mM, what is the concentration after 2.5 hours? 4.03.2e2 XmM
Transcribed Image Text:Consider the first-order reaction C₂H6 → 2 CH3 at 500°C where its half-life is 21 minutes. (a) How long does it take for the concentration C₂H6 to drop from 6.6 mM to 3.1 mM? 4.0 23 min From 3.1 mM to 1.8 mM? 4.0 17 min (b) If the original concentration of ethane is 4.5 mM, what is the concentration after 2.5 hours? 4.03.2e2 XmM
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