# Question #497d6

##### 1 Answer

#### Answer:

The mole fraction of sucrose in your solution is **0.018**.

#### Explanation:

Molality is defined as moles of solute, in your case sucrose, per **kilograms** of solvent, in your case water.

To make the calculations easier, you can assume that your **1 molal** solution contains *1 mole* of sucrose in *1 kg* of water.

To get the mole fraction of sucrose, you need to determine how many total moles are present in your solution. Since you know that you have *1 mole* of sucrose, all you need to determine is how many moles of water you get in *1 kg*, or *1000 g*, of water.

To do that, use water's moalr mass

Thus, the mole fraction of sucrose in your solution will be

I'll leave the answer rounded to two sig figs, despite the fact that you only have one sig fig for the molality of the solution