# chemistry

posted by .

Calculate the molality of acetone in an
aqueous solution with a mole fraction for ace-
tone of 0.171.

• chemistry -

Assume you have 1 mol of soln; therefore,
Xacetone = 0171
XH2O = 0.829
g H2O = 0.829*molar mass H2O = approximately 14.9 mL H2O or 0.0149 kg.
Then m = mols acetone/kg H2O =0.171/0.0149 = ?m

## Similar Questions

1. ### Chemistry

An aqueous solution contains 2.0 % NaCl by mass. (1) Calculate the molality (NOT molarity!) of the solution. (2) Calculate the mole fraction of the solution. I know how to solve both but the problem is missing one other compound/element. …
2. ### Molality

An aqueous solution contains 8.7% NaCl by mass. 1. Calculate the molality of the solution. 2. Calculate the mole fraction of the solution.
3. ### Chemistry I

Acetone , C3H6), is the main ingredient of nail polish remover. A solution is made up by adding 35.0 ml of acetone (d=0.790g/ml) to 50.0ml of ethyl alchole, C2H6O (d=0.789 g/ml). summing volumes are additive, calculate (a). the mass …
4. ### Chemistry

Calculate the molality of acetone in an aqueous solution with a mole fraction for acetone of 0.235. Answer in units of m.
5. ### Chemistry

What is the vapor pressure of the solvent in an aqueous solution at 25◦C of 0.29 m (molality) urea(CO(NH2)2), a nonelectrolyte?

7. ### Chemistry

Calculate the molality, molarity, and mole fraction of FeCl3 in a 39.2 mass % aqueous solution (d = 1.238 g/mL).
8. ### Chemistry

What are the molality and mole fraction of solute in a 32.3 percent by mass aqueous solution of methanol (CH3OH)?
9. ### chemistry

calculate the molality, molarity, and mole fraction of NH3 in an 12.80 mass % aqueous solution (d=0.9651 g/ml)
10. ### Chemistry 2

Calculate the molality, molarity, and mole fraction of FeCl3 in a 25.7 mass % aqueous solution (d = 1.204 g/mL).

More Similar Questions