A cylinder with a movable piston contains 4.0 liters of gas at 30 degrees Celsius 4 bar. The piston is slowly moved to compress the gas to 8.0 bar. a) considering the system to be the gas in the cylinder and neglecting Ep, write and simplify the close system energy balance. Do not assume that the process is isotherm in this part.  b) Will the temperature increase, decrease or remain the same? Explain

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