What Is the Boiling Point of a Urea Solution?

[sweetshelly]

Homework Statement

Calculate the boiling point (in degrees C) of a solution made by dissolving 7.49 g of urea {CO(NH2)2} in 28.0 g of water. The Kbp of the solvent is 0.512 K/m and the normal boiling point is 373 K

Homework Equations

Delta Tf = (i)(m)(Kbp)

The Attempt at a Solution

Kbp= 0.512 k/m

molality (m)= ?
first I have to find molality
(7.49g/60g)/(.028 kg water) = 4.458m

I don't know what the i value is. What do I do with the normal boiling point?

The answer is 102.283 celicus this would be 375.28K.
Then I did some research on the internet I came across this site that didn't use the i value is this possible.
375.28= 373 + delta Tf

 

[axewater]

I came to this forum to try and help out, but I see only so much stuff I don't know anything about anymore ... Obviously my education outdated LOL
I've reached my bioling point ... I'm going out for a smoke !