A piston and cylinder device contains Air at 105 kPa and T= 25°C. The initial volume of air is 0.001 m³. Heat is transferred to the air, until the volume

is doubled and reached a stop,and the pressure at this stage is 110 kPa. More heat is added until the air pressure reaches115 kPa. Use constant specific heat at 30OK. Determine the amount of heat transfer.