An insulated rigid container contains air at 5 bar and 375 K. The volume of the container is 1 m3. Air may be assumed to behave as an ideal gas so that the P-V-T relationship is PV = nRT, where R = 8.314 kJ/kmol K. The specific heat CV of air is 20.785 kJ/kmol K. The temperature of the air is increased by a rotating paddle wheel. Calculate the work done to raise the temperature of the air to 425 K.

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