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Unformatted text preview: Department of Chemical Engineering ChE 110A University of California, Santa Barbara Winter 2011 Problem Set No. 4 Due: Wednesday, January 26, 2011 Objective : To use the First Law and the concepts of enthalpy and heat capacity to assess processes in open and closed systems. Note: Numerical values for some problems have been changed from those in the book. Problem 13 (thought problem) For many gases at low densities and pressures (where ideal gas behavior is obtained), g G is fit well by the following functional form: g G / g where ,,g are all constants, with appropriate temperature units so that the RHS of this equation is dimensionless. a) How can a gas be both ideal and follow the equation above, at the same time? b) Such a gas initially at expands slowly in an insulated piston to double its original volume; you would like to find the final temperature . A friend suggests you may use the following equation that we derived in class:...
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