A vertical piston-cylinder device initially contains air at 150 kPa and 27 °C. At this state, the piston is resting on a pair of stops, and the enclosed volume is 400 L. The mass of the piston is such that a 350-kPa pressure is required to move it. The air is now heated until its volume has doubled. Determine:
(a) the final temperature
(b) the work done by the air
(c) the total heat transferred to the air
Assume the air is an ideal gas and: cv,air = 0.717 J/g.K, Mair = 28.97 g/mol.