(NH₄)₂SO₄ has a van't Hoff factor of i = 2.3. What is the concentration of particles in a 0.6901 M solution of (NH₄)₂SO₄?

What is the mole fraction of acetone, C3H6O, in the vapor phase from a solution consisting of a mixture of acetone and ethyl acetate, CH3COOCH2CH3, at 30.00 °C, if the total pressure above the solution is 202.2 torr? The vapor pressures of pure acetone and NaN at 30.00 °C are 285.0 torr and 118.0 torr, respectively.

A solution of 4.55 % phenol (C6H6O) solution by mass in carbon tetrachloride, CCl4.  The density of the solution is 1.602g/mL.  What are the molality, mole fraction, and molarity of phenol in the solution?   a. Fill in the summary table as you determine different parts of the problem – the first few columns are labeled – it is up to you to decide what is important information:   Molar mass mole         Solute             Solvent             Solution               b. Molality:   c. Mole Fraction:     d. Molarity:

In a 50.0-g aqueous solution of methanol, CH, O, the mole fraction of methanol is 0.190. What is the mass of each component? mass of CH,O: g CH,O mass of water: g H,0