Air at temperature 527oC and pressure 30 atmospheres is admitted into the cylinder of an engine. Calculate the pressure of the gas when it has expanded to 5 times its volume and cooled to 127oC as it leaves the engine
A. 1.5 atmospheres B. 2.5 atmospheres C. 3.0 atmospheres D. 12.8 atmospheres E. 15.0 atmospheres
