A mixture of hydrocarbons made up of 10% propane, 40% mol of n-butane and 50% mol of n-pentane, evaporates instantly in a flash drum at 758 kPa and 350 K. Determine: a) The fraction of vaporization reached in the drum b) The molar compositions of the vapor and liquid products. c) The amount of liquid vapor product if the feed rate is 75 kmol/h. d) The recovery (fraction percentage) of each of the components in both products. Assume that the mixture is an ideal solution and that the required Ki values are obtained from De Priester's nomograms.