# Question #71a55

##### 1 Answer

Your compound will have a molar mass of **200 g/mol**.

To solve this problem, you're going to need the *ebullioscopic constant*,

Notice that there's a difference between the boiling point of the pure solvent and the boling point of the solution, which implies that you can use the *boiling-point elevation* formula

**ebullioscopic constant**;

Molality is defined as moles of solute, in your case the unknown compound, per kilograms of solvent, in your case carbon tetrachloride.

In general, the van't Hoff factor for substances soluble in non-polar solvents is equal to **1**.

Use the above equation to solve for the molality of the solution

Use the equation for molality to determine how many moles of the unknown compound you have present

Now use the compound's mass to solve for its molar mass

Rounded to one sig fig, the number of sig figs you gave for the mass of the compound, the answer will be