lecture 01_07_10

Lecture 01_07_10 - Today Using Heat Capacities(7-3 Definition of Volume work(7-4 Reversible versus irreversible Changes(7-5 Reaction Enthalpies

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1 01-07-10 Today Using Heat Capacities (7-3) Definition of Volume work (7-4) Reversible versus irreversible Changes (7-5) Reaction Enthalpies, Enthalpies of Formation (7-6/8) Hess Law – Calculating with Enthalpy (7-7) Fossil Fuels (7-9) Tuesday (01-12-10) Start chapter 12: Forces and properties of liquids. Phase changes, enthalpies, and Clausius-Clapeyron. Phase Diagrams. LEARNING SKILLS CENTER, 2205 DUTTON HALL 752-2013 *StudySkills*Writing*ESL*Science*Mathematics Resource Room - 2211 Dutton Hall The workshops are designed to help students by giving summaries of important concepts, practicing certain problems, and if possible, reviewing before exams. We try to keep pace with the course topics covered in lecture. The workshops are open to everyone free, and carry no credit. Students must sign up for the workshops at 2205 DuttonHall. Jim Hollister, Science Skills Specialist Learning Skills Center 2254 Dutton Hall University of California, Davis (530) 752-2013 Davis, California 95616-8677 [email protected]
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2 Example 136 kJ of heat (the energy of 10 g of sugar) are added to 1L of water. The temperature rises from 25 °C to 57.5 °C. What is the heat capacity of 1 L of water? Work is defined as Movement against a Force W = 500 [N] * 10 [m] = 5,000 [Nm] = 5,000 [Joule] = 5 [kJ] Conversion 1 [calorie] = 4.18 [Joule] 1 [Joule] is the energy needed to move an object 1 meter against a force of 1 Newton 1 [Joule] = 1 [Newton*m] = 1[Nm] s F w Δ = Exchange of Work Move car 10 m on a street: (Equals chemical energy content of 0.3 g of sugar)
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3 Work is done by a system, when it expands against a pressure V p w Δ = Volume Work s F
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This note was uploaded on 02/16/2010 for the course CHEM 35991 taught by Professor Osterloh during the Spring '10 term at UC Davis.

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Lecture 01_07_10 - Today Using Heat Capacities(7-3 Definition of Volume work(7-4 Reversible versus irreversible Changes(7-5 Reaction Enthalpies

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