The weight of a non-volatile solute (molecular weight = 40), which should be dissolved in 114g octane to reduce its vapour pressure to 80% is ___________ .

Explanation

To solve the problem of determining the weight of a non-volatile solute that should be dissolved in 114g of octane to reduce its vapor pressure to 80%, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Problem**:
We need to find the weight of a non-volatile solute that, when added to 114g of octane, will reduce the vapor pressure of the solution to 80% of the pure solvent's vapor pressure.

2. **Identify Given Data**:
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