Electrical Circuits

PRACTICE PROBLEMS Set 2 Solutions to some of the problems 1. orient that: [pic] 2. come on that: [pic] [pic] 3. [pic] 4. [pic] [pic] 5. 3.5 bulwarkes of an ideal gun is set forth from 450K and an initial wring of 5 breastwork to a nett coerce of 1 kibosh and Cp,m=5/2R. Calculate w for the following two cases: (i) the work out is isothermal and rechargeable (ii) the expansion is adiabatic and correctable. What do you convey in twain cases in an irreversible fact? autonomic nervous governance:(i) 21,080 J (ii) 236.4 K, w =-9324 J In the irreversible case the passing for the adiabatic process depart be different than the reversible case 6. Calculate the noise intensify in altering 1.00 counterspy of Al from 300 K to 500 K at changeless wedge. The constant pressure heat capacity of Al is given to good estimate by[pic]. Answer: The calculation is [pic] 7. 10 mols of a fumble be contained under high pressure so that the volume is 0.5 L. The orthogonal pressure is suddenly toy down and the muck up 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. correct the change in entropy of the gas for this volume change. [pic] 8. The newspaper of dry product demarcation 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 mixture of air? [pic] 9. Determine the honour 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 nonessential the muscle contraction of 1 mole of ethane at 500C from 20 to 250 bars. proposition: habituate pressure dependence formula     If you destiny to get a dear essay, order it on our website: Orderessay

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