I have tried many different approaches to this problem and none of the answers match my choices, so I'm obviously doing something wrong please help! Telling me what equation to use and how to solve will help me out greatly!
A solution of Carbon Tetrachloride in benzene, C6H6, at 20 degrees Celsius has a total vapor pressure of 78.5 mmHg. (assume that this solution is ideal) The vapor pressure of pure benzene at this temperature is 74.61 mmHg and its density is 0.87865 g/cm3; the vapor of pure carbon tetracholride is 91.32 mmHg and it's density is 1.5940 g/cm3. What percentage of the volume of this solution is due to carbon tetrachloride? (Hint: assume that you have 1.000 L of solution.)