The normal boiling point of diethyl ether is 34.58C. A solution containing a nonvolatile solute dissolved in diethyl ether has a vapor pressure of 698 torr at 34.58C. What is the mole fraction of diethyl ether in this solution?

what is the mole fraction of methanol?

A solution contains napthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 10.85% napthalene by mass. Calculate the vapor pressure at 25 degrees celsius of hexane above the solution. The vapor pressure of pure hexane at 25 degrees celsius is 151 torr.

A solution is made by mixing 72.1 grams of propyl chloride, C3H7Cl, and 38.4 grams of propyl bromide, C3H7Br.  What is the vapor pressure of propyl chloride in teh solution at 25 degrees C?  Assume that the solution is an ideal solution.  The vapor pressure of pure propyl chloride is 347 torr at 25 deg C and of pure propyl bromide is 133 torr at 25 deg C.   - Thanks - need help!  I've worked this out for my quiz several times and cannot come up with the correct answer.  Heather (middle name).

The partial pressure of a solution of 175 g of CaCl2 in 975 g of water at 25 0C is torr. Given that the density of the solution is 1.10 g/mL and the partial pressure of pure water at 25 °C is 23.76 torr

53.9 grams of an unknown ionic solid with molecular formula XF are dissolved in 750 grams of water at 25 degrees C. after being fully dissolved the vapor pressure of the solution measures 23.4 torr. what is the molecular formula of the solute? The vapor pressure of water at 25 degrees C is 23.8 torr. assume every mole of XF dissociates into two moles of ions and that this solution behaves ideally.

A solution composed of 50.0 g strontium chloride (SrCl)) in 300 g of water at 12.0 °C. What is the mole fraction of SrCl2 in this solution? The molar mass of SrCl, is 158.5 g mol-1 and the molar mass of H2O is 18.02 g mol-1.

What is the composition of a methanol –propanol  solution that has a vapor pressure of 85.7 torr at 40°C? At 40°C, the vapor pressures of pure methanol and pure propanol are 303 and 44.6 torr, respectively. Assume the solution is ideal. Mole fraction of methanol =  Mole fraction of propanol =

A 30.0 mL sample of this aqueous HX solution freezes at – 0.186 oC. What is the molar mass of HX?

The normal boiling point of methanol is 64.7°C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 670. torr at 64.7°C. What is the mole fraction of methanol in this solution? Mole fraction =