clear answers on what the composition will be, posted question one for reference (dont need question 1 answered)

3. If a simple distillation were to be performed on this mixture (from Question 1), what would be the composition of the initial distillate? 4. Suppose the mixture were to be distilled using a very efficient fractional distillation column. What would the composition of the initial distillate be? 1. Calculate the vapor pressure at 80C of a mixture of 35mol% hexane and 65mol% heptane