Q5: A mixture composed of the following gases with concentrations shown in front of each of them: N2: 25 %; 02:35 %; CO2: 20%; CO: 20% Calculate: a. Molecular weight of the mixture. b. Molar specific heats. c. Ratio of specific heats. d. Mixture density at 1.5 bar and 15°C. (Ans: 32.6 kg/kmol, 30.9 ki/kmol K, 22.6 kJ/kmal K, 1.37, 2.04 kg/m²)