4.00 moles of a monatomic ideal gas at a temperature of 340 K are compressed adiabatically from an initial volume of 70.0 L to a final volume of 30.0 L. What is the final pressure in the gas?
A) 663 kPa
B) 581 kPa
C) 106 kPa
D) 42.1 MPa
E) 2.17 MPa

Question

Quizplus · Accepted Answer

The correct answer is A because the adiabatic process for an ideal gas is given by PVγ = constant, where γ is the ratio of specific heats. Since the volume decreases, the pressure must increase to keep the product PVγ constant.

400 Moles of a Monatomic Ideal Gas at a Temperature