At 100 °C, the vapor pressures of hexane and octane are 2.415 atm and 0.446 atm. Solutions of these are ideal, i.e., they follow Raoult's law. One particular solution is mixed and held at 100 °C and 5.00 atm, where it is all in the liquid phase. The pressure is slowly reduced to 1.50 atm, where the system is found to exist as a two-phase (gas-liquid) system. (10 points) (a) What is the liquid-phase hexane mole fraction? (b) What is the gas-phase hexane mole fraction? (c) It is further found that the ratio of the total number of moles in the liquid phase, n(l), to the total number of moles in the gas phase, n(g), is 1.10. What is the total system composition, namely, the isopleth composition?