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Homwork+assignment+1 - mechanically isolated from its...

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45B HW #1 (Due 1/24/2012) 1. Please describe the J.W.Gibbs' contributions to modern thermodynamics, the book introduces the Gibbs contributions worldwide, and laid down the foundation of Chemical Engineering. 2. Please give one-sentence description of thermodynamics. 3. Describe the Laws of Thermodynamics. 4. Who did come up the term of Thermodynamics? Please describe the birth of thermodynamics as a modern engineering science. 5. Please provide the definition and one example for each of the following terms: isothermal process; adiabatic process; closed system; open system; isolated system. 6. Problem 1.1 in textbook. For each of the cases that follow, list as many properties of the equilibrium state as you can, especially the constraints placed on the equilibrium state of the system by its surroundings and/or its container. a. The system is placed in thermal contact with a thermostatic bath maintained at temperature T. b. The system is contained in a constant-volume container and thermally and
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Unformatted text preview: mechanically isolated from its surroundings. c. The system is contained in a frictionless piston and cylinder exposed to an atmosphere at pressure P and thermally isolated from its surroundings. d. The system is contained in a frictionless piston and cylinder exposed to an atmosphere at pressure P and is in thermal contact with a thermostatic bath maintained at temperature T. e. The system consists of two tanks of gas connected by tubing. A valve between the two tanks is fully opened for a short time and then closed. 7. Problem 2.1 in textbook. As a result of a chemical spill, benzene is evaporating at the rate of 1 g/min into a room that is 6 m * 6 m * 3 m in size and has a ventilation rate of 10 m 3 /min. a. Compute the steady-state concentration of benzene in the room. b. Assuming the air in the room is initially free of benzene, compute the time necessary for benzene to reach 95 percent of the steady-state concentration....
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This note was uploaded on 02/20/2012 for the course CBEMS 45B taught by Professor Shi during the Spring '12 term at UC Irvine.

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