What is the molality of a solution of methanol in water in which the mole fraction of methanol is 0.25?

Explanation

To find the molality of a solution of methanol in water where the mole fraction of methanol is 0.25, we can follow these steps:

### Step 1: Understand the mole fraction
The mole fraction of methanol (CH₃OH) is given as 0.25. This means that in a solution, there are 0.25 moles of methanol for every 1 mole of solution.

### Step 2: Calculate moles of water
Since the total mole fraction must equal 1, we can find the moles of water (solvent) in the solution:
- Moles of water = 1 - Moles of methanol = 1 - 0.25 = 0.75 moles of water.
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