Propane gas at 1 bar and 35°C is compressed to a final state of 135 bar and 195°C. Estimate the molar volume of the propane in the final state and the enthalpy and entropy changes for the process. In its initial state, propane may be assumed an ideal gas.

Calculate the change in the entropies of the system and the surroundings, and the total change in entropy, when the volume of a sample of argon gas of mass 21 g at 298 K and 1.50 bar increases from 1.20 dm3to 4.60 dm3 in (a) an isothermal reversible expansion, (b) an isothermal irreversible expansion against pex = 0, and (c) an adiabatic reversible expansion. Please try to write as clear as possible

3. Compute the change in volume when one kilogram of Toluene is compressed from 1 bar to 100 bar at a constant temperature of 20 °C. The volumetric properties of Toluene at 20 °C are: specific volume 1.154 L kg 1, isothermal compressibility = 8.96 x 10-5 bar-1, and volume expansivity = 1.05 × 10–3 °C-1.

A system consisting of 0.20 mol of supercooled gaseous water (95°C, 1 bar) partially condenses to liquid water; the process is done adiabatically at constant pressure.         At equilibrium, what is the temperature of the system? How many moles of gaseous water have condensed? Calculate the entropy change for the process.