Please show how you do it in as much detail as possible! Thank you!

2. Vapor Pressures of solutions a. Non-volatile solute - 18 molal ethylene glycol in water is a typical composition of windshield wiper fluid. Assuming ethylene glycol has a negligible vapor pressure, what is the vapor pressure of this solution at 25C if pure water has a vapor pressure of 28 torr? b. Titan, a moon of Saturn, has thousands of liquid hydrocarbon lakes on its surface, which averages 180C. One lake has a composition of 70% methane and 30% ethane by weight, which have vapor pressures of 120 and 79 torr, respectively, at 180C. What is the expected equilibrium vapor pressure of this lake