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Thermodynamics and Chemical Dynamics 131C. Lecture 04. Entropy.

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Thermodynamics and Chemical Dynamics (Chem 131C) is part of OpenChem: video is part of a 27-lecture undergraduate-level course titled "Thermodynamics and Chemical Dynamics" taught at UC Irvine by Professor Reginald M. Penner.Recorded on April 9, 2012.Slide Information00:05 - Intro Slide: Entropy00:15 - Announcements01:00 - Quiz I histogram01:03 - What's in this Lecture?01:17 - Six things we have learned about Statistical Mechanics04:17 - Boltzman Distribution Law Diagram and Definition04:21 - Things we Have Learned About Statistical Mechanics so Far04:32 - The Boltzmann Distribution Law Formula (Diagram)06:34 - Formula/Equation Diagram (the average internal energy of each of N molecules)08:11 - Equation Diagram ("so q contains information about the averge internal energy of our system.")09:13 - Diagram: (The NO molecule)10:01 - Graph (b) the electronic contribution to the molar internal energy at 300K.11:20 - Graph (b) - Evaluating formula13:58 - (Does formula and solution make sense?)15:37 - Chart (On p. 429 of your book, three types of ensembles are discussed as follows:)16:24 - Chart: Microcanonical Ensembles16:34 - About Microcanonical Ensembles17:14 - Graph: Example: NO - it's obvious we're talking about one molecule here...17:54 - Diagram: The Boltzmann Distribution Law in terms of the molecular partition function, q18:14 - so q asks the question:18:47 - Canonical Ensembles19:38 - Well, consider just two molecules, call them a and b...21:28 - this is the appropriate expression when the N units are distinguishable.22:48 - Equations for two States (for two distinguishable units, we CAN tell the difference...)24:35 - Chart: What if we had three molecules, a, b,c...25:53 - Chart: Ensemble name| What's Constant | Its Partition Function27:01 - Experiment: Place 100 nickels into a shoes box, all heads up29:00 - Experiment: 1. Place 100 nickels into a shoes box, ALL heads up...30:34 - Experiment Conclusion: "For any isolated assembly, we can always predict...31:00 - For any isolated assembly...31:55 - Formula: S = k In WFor more information and access to courses, lectures, and teaching material, please visit the official UC Irvine OpenCourseWare website at:

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