Consider a sealed can that is filled with refrigerant-134a at 20°C. Now a leak develops, and the pressure in the can drops to the local atmospheric pressure of 80 kPa. The temperature of the refrigerant in the can is expected to drop to (rounded to the nearest integer)
A)0°C
B)-31°C
C)-18°C
D)3°C
E)20°C

Question

Quizplus · Accepted Answer

Solved by EES Software. Solutions can be verified by copying-and-pasting the following lines on a blank EES screen. 
P2=80 "kPa"
T2=TEMPERATURE(R134a,x=0,P=P2)

Consider a Sealed Can That Is Filled with Refrigerant-134a at 20°C