Calculate the pressure of the gas when it has expanded to 5 times its volume and cooled to 127°C as it leaves the engine

Air at temperature 527°C 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 127°C 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

Correct Answer:

Option C – 3.0 atmospheres