A flexible balloon contains 0.355 mol m o l of an unknown polyatomic gas. Initially the balloon containing the gas has a volume of 7050 cm3 c m 3 and a temperature of 28.0 ∘C ∘ C . The gas first expands isobarically until the volume doubles. Then it expands adiabatically until the temperature returns to its initial value. Assume that the gas may be treated as an ideal gas with Cp=33.26J/mol⋅K C p = 33.26 J / m o l ⋅ K and γ=4/3 γ = 4 / 3 . A- What is the total heat QQ supplied to the gas in the process?
B- What is the total change in the internal energy ΔUΔU of the gas?
C- What is the total work WW done by the gas?
D- What is the final volume VV?