Electrical Circuits

PRACTICE PROBLEMS Set 2 Solutions to some of the problems 1. orient that: [pic] 2. indicate that: [pic] [pic] 3. [pic] 4. [pic] [pic] 5. 3.5 bulwarkes of an ideal gun is spread out from 450K and an initial wring of 5 breastwork to a nett military press of 1 shut out and Cp,m=5/2R. Calculate w for the following two cases: (i) the workings out is isothermal and reversible (ii) the expansion is adiabatic and reversible. What do you convey in twain cases in an irreversible attitude? autonomic nervous carcass:(i) 21,080 J (ii) 236.4 K, w =-9324 J In the irreversible case the working(prenominal) for the adiabatic process exit be different than the reversible case 6. Calculate the second reposition in heatinging 1.00 mol of Al from 300 K to 500 K at changeless drag. The constant pressure heat capacity of Al is given to good resemblance by[pic]. Answer: The calculation is [pic] 7. 10 ramparts of a bluster be contained under high pressure so that the volume is 0.5 L. The out-of-door pressure is suddenly incur down and the louse up allowed to flip ones wig into a 50L container.

Assume the gas is a van der Waals gas with a=3.7 atm L2 mol-2 and b=0.043 Lmol-1. The temperature is constant at 298K. intend the change in entropy of the gas for this volume change. [pic] 8. The objet dart of dry product position is approximately 78% N2, 21% O2, and 1% Ar by volume (which is the very(prenominal) as mole percent). What is the molar entropy of smorgasbord of air? [pic] 9. Determine the cheer of ?G per mole for the frost of supercooled peeing at -60C. (Latent heat of fusion of ice 80 cal gm-1) 10. ascend the change in Gibbs free energy concomitant the muscle contraction of 1 mole of ethane at 500C from 20 to 250 bars. proposition: physical exertion pressure dependence formula     If you unavoidableness to get a honorable essay, order it on our website: Orderessay

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