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Q2. An ideal gas having a mass of 3kg is expanded from a pressure of 9 bar and volume of 1.6m3 to a pressure of 1.4bar and volume 4.8m3. Given that the change in internal energy is 515kJ, calculate:
(i) The gas constant
(ii) Change in enthaply
(iii) Initial and final temperatures
(Take for the gas, Cv = 1.047kJ/kgK )

Sagot :

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