Calculated the molality of a sulphuric acid solution in which the mole fraction of water is 0.85.

Explanation

To calculate the molality of a sulfuric acid solution in which the mole fraction of water is 0.85, we can follow these steps:

### Step 1: Understand the mole fraction
The mole fraction of water is given as 0.85. This means that in a mixture of water and sulfuric acid, 85% of the total moles are water.

### Step 2: Calculate the mole fraction of sulfuric acid
Since the total mole fraction must equal 1, we can find the mole fraction of sulfuric acid (let's denote it as \(X_{H_2SO_4}\)):
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