lec2_whc - LEARNING SKILLS CENTER 2205 DUTTON HALL 752-2013...

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LEARNING SKILLS CENTER 2205 DUTTON HALL 752-2013 * Study Skills * Writing * ESL * Science * Mathematics Resource Room- 2211 Dutton Hall The chemistry workshops are designed to help students by giving summaries o important concepts and practicing certain problems . We try to keep pace w course topics covered in lecture . The workshops are open to everyone , are fr carry no credit . Students must sign up for the workshops at 2205 Dutton Ha Hours for the workshops are: GENERAL ASSISTANCE IN CHEM 2B # 65 TTh 3:10 – 4:00 pm Jim Hollister Jan 10 through Mar 14 # 66 TTh 4:10 – 5:00 pm Jim Hollister Jan 10 through Mar 14 Students can obtain room numbers for the workshops when they sign up . Jim Hollister Chemistry Workshop Instructor Learning Skills Center Office Hours: 10-10:50 AM, M-F 2256 Dutton Hall & by appointment University of California, Davis (530) 75 2-2013 Davis, California 95616-8677 [email protected] http://lsc.ucdavis.edu/chembio.htm then hit: Chemistry Workshop Pages
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Announcements Lab has already started !!! Discussion has also already started !!! PTA #: Slava Bekker: [email protected] Head TA office hours: W 11–12 Chem 159
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Last Time System and Surroundings Energy (Kinetic & Potential) Thermal energy (random kinetic) T Heat – Flow of energy due to T difference Conservation of energy Exothermic and Endothermic reactions How do we measure the heat transfers?
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First Law of Thermodynamics is that energy is conserved energy is neither created nor destroyed. it can be transferred between the system and surroundings. q system + q surroundings = 0 q system = -q surroundings System Surroundings - Positive means a flow to , - Negative means a flow from !
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Chapter 7: Thermochemistry Thermodynamics Chemistry
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Last Time First Law of Thermodynamics U = q + w – heat emitted q heat + heat absorbed – work delivered w work + work accepted Know q and w calculate U
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Heat q Unit of heat: calorie – 1 cal = amount of energy required to heat 1 g of H 2 O by 1 ° C Standard S.I. Unit: Joule – 1 cal = 4.184 J Different materials heat differently
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