A certain ideal gas has a molar specific heat of CV = 7/2R. A 1.15-mol sample of

Question

A certain ideal gas has a molar specific heat of CV = 7/2R. A 1.15-mol sample of the gas always starts at pressure 2.00 105 Pa and temperature 335 K. For each of the following processes, determine the final pressure (Pf), the final volume (Vf), the final temperature (Tf), the change in internal energy of the gas (?Eint), the energy added to the gas by heat (Q), and the work done on the gas (W). (i) The gas is heated at constant pressure to 485 K. Pf = kPa Vf = L Tf = . K ?Eint = J Q = J W = J (ii) The gas is heated at constant volume to 485 K. Pf = kPa Vf = L Tf = . K ?Eint = J Q = J W = J (iii) The gas is compressed at constant temperature to 250 kPa. Pf = . kPa Vf = L Tf = K ?Eint = J Q = J W = J (iv) The gas is compressed adiabatically to 250 kPa. Pf = . kPa Vf = L Tf = K ?Eint = J Q= J W = J

Explanation / Answer

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