One mole of gas which has an initial temperature of 298 K expands from the pressure of 5 atm to 1 atm (The gas behaves i

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One mole of gas which has an initial temperature of 298 K
expands from the pressure of 5 atm to 1 atm (The gas behaves
ideally). In each of the situations listed below:
1. isothermal and reversible expansion
2. isothermal and irreversible expansion
3. Adiabatic and reversible expansion
4. adiabatic and irreversible expansion
Calculate the final gas temperature, the work done by the gas,
amount of heat involved, entalphy change of the gas, and the
variation of the internal energy of the gas.
(Cv = 3R/2 and Cp = 5R/2)