A solution contains naphthalene dissolved in hexane at a concentration of 10.40% naphthalene by mass. Calculate the vapor pressure of hexane above the solution, given that the vapor pressure of pure hexane at this temperature is 151 torr.

Answer 1

Convert 10.4% naphthalene in hexane to Xnaph and Xhexane.
Tben Phexane = Xhexane*P^ohexane.

Answer 2

how do i convert so? 10.4gNaphx1mol/128.18gNaphx86.2gHexane/1mol=6.99molHexane?

6.99mol*151torr=1056.08?