An air standard Carnot cycle is executed in a closed system between the temperature limits of 350

Question:

An air standard Carnot cycle is executed in a closed system between the temperature limits of 350 K and 1200 K. The pressure before and after the isothermal compression are 150 kPa and 300 kPa respectively. If the net work output per cycle is 0.5 kJ, determine
(a) The maximum pressure in the cycle,
(b) The heat transfer to air and
(c) The mass of air. Use the IG model for air.