compoarition: 93.5%CH,4.6%C2H6,1.2%C8H8, and 0.7%CO2. Calculate: (a) Average molecular weight of the LNG mixture. (b) Weight fraction of CH4 in the mixture. Answer: 87.11e (c) The LNG is heated to 320K and 140kPa, and vaporizes completely. Estimats the density of the gas mixture under these conditions. Answer: 0.904kg/m2 (c) Estimate the diffusivity of aniline (C6H7N) in air at 273K and 1atm. Compare It with the experimental value of 0.061cm2/s (Guilliland, 1934). The normal boiling point of aniline is 457.6K, and its critical volume is 274cm3/mol. Answer: Error = 16.1%