)(True or False) The length of the saturated mixture line underneath the dome decreases with increasing pressure.

Part A - Molar mass A gas mixture contains 3.6 kg of H2 with M_bar1 = 2.02 kg/kmol , 8.1 kg of N2 with M_bar2 = 28.01 kg/kmol , and 5.1 kg of Ar with M_bar3 = 39.95 kg/kmol. What is the apparent molar mass of the mixture? Express your answer with appropriate units to three significant figures. Part B - Specific enthalpy The mixture from Part A is initially at 330 K and 155 kPa . Heat is added until the mixture is at 430 K and 255 kPa. If cp1 = 14.307 kJ/kg⋅K, cp2 = 1.039 kJ/kg⋅K , and cp3 = 0.5203 kJ/kg⋅K, what is the change in specific enthalpy of the mixture using the perfect gas model? Express your answer with appropriate units to three significant figures. Part C - Entropy of mixing The mixture in Part A was formed by taking containers of H2, N2, and Ar all at 330 K and 155 kPa and allowing them to mix. Using the energy equation and ideal gas equation of state, it can be shown that if the gases are all initially at the same temperature and pressure, then…

Moist air initially at T1 = 140°C, p1 = 4 bar, and φ1 = 62% is contained in a 2.0-m3 closed, rigid tank. The tank contents are cooled to T2 = 35°C. a) Determine the temperature at which condensation begins, in °C. (i got 121.2 C which is correct) b) Determine the heat transfer, in kJ.

2.