A mixture of ethanol and 1-proponol behaves ideally at 36 degrees celcius and is in equillibrium with its vapor. If the mole fraction of ethanol in the solution 0.49, calculate the mole fraction in the vapor phase at this temperature. (the vapor pressure of pure ethanol and 1-propanol at 36 degrees celcius is 108 mmHg and 40mmHg, respectively)