In an internal combustion engine, an air/fuel mixture at atmospheric pressure and 23 ?C is compressed in a cylinder by a piston to 1/9 of its original volume (compression ratio of 9).

a. If the pressure remains constant, what is the temperature of the compressed mixture?

b. If the temperature remains constant, what is the gauge pressure of the compressed mixture?

c. In reality, both the pressure and temperature increase. If the gauge pressure is 36 atm, what is the temperature of the compressed mixture??