An aqueous solution contains 10.6% NaCl by mass. What mass of water (in grams)is contained in 2.8L of the vapor above this solution at 55 celcius?

An aqueous solution contains 10.6% NaCl by mass. What mass of water (in grams)is contained in 2.8L of the vapor above this solution at 55 celcius? the vaor pressure of pure water at 55 celcius is 118 torr.