# chemistry

posted by .

The density of acetone vapor in equilibrium with liquid acetone, (CH3)2CO, at 33.1°C is 0.832 g L?1. What is the vapor pressure of acetone at 33.1°C, expressed in kilopascals?

agian i am confused with formulae, hoe you can helpm thanks!

change 0.832 g to mols.
Use PV = nRT
P will be in KPa.
V = 1 L
R = 0.08205 when P is in atm and V in liters. But use 8.3145 if P is to be in kPa. Of course, you CAN calculate P in atmospheres, then convert to kPa knowing there are 1o1.325 kPa per 1 atm. I hope this helps.

thanks appreciate it!

## Similar Questions

1. ### Chemistry

Determine the mole fraction of acetone in a solution prepared by adding 0.456 kg of (CH3)2CO to 0.899 L of C4H8O. Molar Mass (g/mol) (CH3)2CO 58.05 C4H8O 72.12 Density (g/ml): (CH3)2CO 0.7899 C4H8O 0.8892 Name/Formula: acetone (CH3)2CO …
2. ### Chemistry

A 893 g sample of a solution of the solute (CH3)2CO in the solvent C4H8O that has a concentration of 28.6 pph by mass (CH3)2CO is available. Calculate the amount (g) of acetone that is present in the sample. Molar Mass (g/mol) (CH3)2CO …
3. ### chemistry

A solution of the solute hexane and the solvent acetone that is 28.1 g hexane per 100. g solution is available. Calculate the mass (g) of the solution that must be taken to obtain 0.646 kg of CH3(CH2)4CH3. Molar Mass (g/mol) CH3(CH2)4CH3 …
4. ### chemistry

A 893 g sample of a solution of the solute (CH3)2CO in the solvent C4H8O that has a concentration of 28.6 pph(parts per hundred) by mass (CH3)2CO is available. Calculate the amount (g) of acetone that is present in the sample. Molar …
5. ### Chemistry: Raoult's Law

If 0.380 mol of a nonvolatile nonelectrolyte are dissolved in 3.00 mol of water, what is the vapor pressure P(H2O) of the resulting solution?
6. ### Mole fraction of a vapor pressure?

If 0.380 mol of a nonvolatile nonelectrolyte are dissolved in 3.00 mol of water, what is the vapor pressure P(H2O) of the resulting solution?
7. ### Mole fractions in a liquid mixture:

Acetone, C3H6O, and ethyl acetate, C4H8O2, are organic liquids often used as solvents. At 30 degrees C, the vapor pressure of acetone is 285 mm Hg and the vapor pressure of ethyl acetate is 118mm Hg. the solution is prepared at 30 …
8. ### chemistry

As you saw in Part B, the vapor above the cyclohexane-acetone solution is composed of both cyclohexane vapor and acetone vapor. What mole fraction of the vapor above the solution, X(cy) vapor), is cyclohexane?
9. ### Chemistry

The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of acetone in the solution?
10. ### Chemistry

Assuming ideal behavior, determine the mole fraction of acetone in a solution of acetone and water if the vapor pressure of acetone changed from 750mmHg to 735mmHg.

More Similar Questions