A mixture of 0.3 kg of carbon dioxide and 0.2 kg of nitrogen is compressed from p₁ = 1 bar, T₁ = 300 K to P₂ = 3 bars in a polytropic process for which n = 1.25. Determine (a) the final temperature, in K, (b) the work, in kJ, (c) the heat transfer, in kJ, (d) the change in entropy of the mixture, in kJ/K.

A rigid, well-insulated tank contains a two-phase mixture of ammonia with 0.0022 ft3 of saturated liquid and 1.5 ft3 of saturated vapor, initially at p₁ = 40 lbf/in². A paddle wheel stirs the mixture until only saturated vapor at higher pressure, p2, remains in the tank. Kinetic and potential energy effects are negligible. Determine the pressure p2, in lbf/in², and the amount of energy transfer by work, in Btu.

2. A 0.5 m³ tank holds a two-phase liquid-vapor mixture of carbon dioxide (CO₂) at -17 °C. The quality of the mixture is 0.6. For saturated carbon dioxide at −17°C, vƒ= 0.983 × 10¯³ m³/kg and vg = 1.756 × 10-² m³/kg. Determine: (a) the specific volume of the two-phase CO2 as a closed system; (b) determine the total mass of the CO2; (c) determine the mass of saturated liquid and the saturated vapor, respectively; (d) determine the physical volume of the vapor and the physical volume of the liquid, respectively; (e) determine the ratio of the physical volume of the vapor to that of the liquid. This ratio should reflect the fact that the liquid occupies only a very small fraction of the total physical volume of the tank. Show full steps; carry all units.

A rigid, well-insulated tank contains a two-phase mixture of ammonia with 0.0022 ft³ of saturated liquid and 1.5 ft3 of saturated vapor, initially at p₁ = 70 lb/in². A paddle wheel stirs the mixture until only saturated vapor at higher pressure, p2, remains in the tank. Kinetic and potential energy effects are negligible. Determine the pressure p2, in lb/in², and the amount of energy transfer by work, in Btu. Step 1 * Your answer is incorrect. Determine p2, in lb/in². P2= i81.56 lb/in²