The ideal gas law relates the pressure P, volume V, and temperature T of an ideal gas: PV=nRT where n is the number of moles and R=8.3145 J/(K*mol). Plot of pressure versus volume at constant temperature are called isotherms. Plot the isotherms for one mole of an ideal gas for volume ranging from 1 to 10 m3 , at temperatures of T=100, 200, 300, 400K (four curves in one plot). Label the axes display a legend. The units for pressure are Pa.

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain