A Compression, at a Constant Pressure of 140 KPa, Is $0.26 \mathrm {~m} ^ { 3 }$

Multiple Choice

A compression, at a constant pressure of 140 kPa, is performed on 4.0 moles of an ideal monatomic gas for which C_V = 3/2 R. The compression reduces the volume of the gas from $0.26 \mathrm {~m} ^ { 3 }$ to $0.12 \mathrm {~m} ^ { 3 }$ What is the change in the internal (thermal) energy of the gas during this process? (R = 8.31 J/mol ? K)

A) -29 kJ
B) -49 kJ
C) 29 kJ
D) 49 kJ
E) 0 kJ