Example 1: A vessel of volume 0.4 m³ contains 0.45 kg of carbon monoxide and 1 kg of air, at 15°C. Calculate the partial pressure of each constituent and the total pressure in the vessel. The gravimetric analysis of air is to be taken as 23.3% oxygen and 76.7% nitrogen. Take the molar masses of carbon monoxide, oxygen and nitrogen as 28, 32 and 28 kg/kmol. Example 2: An insulated rigid tank is divided into two compartments by a partition, as shown in the figure. One compartment contains 7 kg of oxygen gas at 40°C and 100 kPa, and the other compartment contains 4 kg of nitrogen gas at 20°C and 150 kPa. Now the partition is removed, and the two gases are allowed to mix. Determine (a) the mixture temperature and (b) the mixture pressure after equilibrium has been established. Take the constant-volume specific heats of N2 and O2 as Cu N₂ = 0.743 kJ/kg K and Co₂ 0.658 kJ/kg K and R = 8.314 kJ/kmol K. . cons On t can volui when const = Notic fractio