Homework Help: college chemistry

Posted by silver on Friday, February 18, 2011 at 7:50pm.

.361 g of a non-volatile solute is dissolved in 160.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 90 oC the vapour pressure of the solution is 5.1701×102 torr. (The vapour pressure of pure water at 90 oC is 5.2580×102 torr.) Calculate the molar mass of the solute (in g).

I keep getting 541.1g/mol. what am I doing wrong? Help me please

college chemistry - wini, Friday, February 18, 2011 at 7:53pm
Now suppose, instead, that the solute in problem 6 is volatile and that the pure solute displays, at 90 oC, a vapour pressure of 52.580 torr. Calculate the molar mass (in g) for this case.

This is the second part to this question
college chemistry - Ms. Sue, Friday, February 18, 2011 at 8:05pm
Please do not switch names -- especially on the same post!!!!!

Answer this Question

Related Questions

Chemistry - What effect do each of these have on the freezing point of the ...
Chemistry Lab - Which of the following would NOT be a factor for a solute to ...
Chemistry Lab - Which of the following would NOT be a factor for a solute to ...
Chemistry - A solution contains 15 g non-volatile non-electrolyte solute C6H14O6...
chemistry - Two solutions are prepared. In Solution A, 5.0 g of a substance of ...
chemistry - A solution of ethanol in water boils at 101.5 degrees C. what is the...
Chemistry - The vapor pressure of water above a sugar water solution at 25.0 ...
Chemistry - When 4.54 g of a nonelectrolyte solute is dissolved in 565 mL of ...
Chemistry - When 4.73 g of a nonelectrolyte solute is dissolved in 965 mL of ...
Chemistry--Pretty simple question - You dissolved a solute in some water to make...

For Further Reading

First Name:
School Subject:
Answer: