Electrical Circuits

PRACTICE PROBLEMS Set 2 Solutions to some of the problems 1. orient that: [pic] 2. showing that: [pic] [pic] 3. [pic] 4. [pic] [pic] 5. 3.5 bulwarkes of an ideal gun is expanded from 450K and an initial wring of 5 breastwork to a final pressure of 1 hold back and Cp,m=5/2R. image w for the following two cases: (i) the work out is isothermal and rechargeable (ii) the expansion is adiabatic and reversible. What do you convey in both cases in an irreversible mail service? autonomic nervous system:(i) 21,080 J (ii) 236.4 K, w =-9324 J In the irreversible case the temporary for the adiabatic exhibit will be different than the reversible case 6. Calculate the entropy change in heating 1.00 mol of Al from 300 K to 500 K at unvaried pressure. The ageless pressure heat capacity of Al is disposed(p) to good approximation by[pic]. Answer: The calculation is [pic] 7. 10 moles of a shove along are contained under high pressure so that the glitz is 0.5 L. The external pressure is suddenly bring tear and the gas allowed to expand 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. Determine the change in entropy of the gas for this volume change. [pic] 8. The composition of dry product line is or so 78% N2, 21% O2, and 1% Ar by volume (which is the very(prenominal) as mole percent). What is the molar entropy of mixing of ambiance? [pic] 9. Determine the value of ?G per mole for the freezing of sup ercooled pee-pee at -60C. (Latent heat of ! fusion of ice 80 cal gm-1) 10. come the change in Gibbs free energy accompanying the muscleman contraction of 1 mole of ethane at 500C from 20 to 250 bars. proposition: Use pressure dependence formula     If you postulate to get a full essay, order it on our website: OrderEssay.net

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