One gram-mole of an ideal gas initially occupies V1 = 5.0 L at P1 = 117 kPa, and then expands to V2 = 10.0 L at constant pressure.
a) How much work was performed by the gas on its surroundings?
b) How much heat is absorbed (+) or liberated (-)?
c) What is the change in the internal energy of the gas?