A balloon filled with 39.1moles of He has a volume of 876L at a0.0°C and 1.00atm. The temperature of the balloon is increased to 38.0°C as it expands to a volume of 998L, while the pressure remains constant. Determine q, w, and ΔE for the He in the balloon. The molar heat capacity of He is 20.8 J/mol·°C.