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Question: a frictionless pistoncylinder device holds two kilograms of exotic...

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. A frictionless piston/cylinder device holds two kilograms of exotic gas at an initial volume of 5 m and an initial temperature of 70°C. The gas has the same molecular weight as air The gas obeys the equation of state Py- aR Inwhere a-450 K and b-25 K. The contents of the cylinder are slowly heated, and the gas undergoes a slow expansion until the final volume is 7m (b) What is the change in internal energy of the gas during this process? The gas has the same ideal gas properties as air

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