Calculate the mole fraction of water in a sodium hydroxide solution which has 80 g of NaOH and 54g of `H_(2)O`.
[Relative atomic masses : Na = 23, O = 16, H = 1]

Explanation

To calculate the mole fraction of water in a sodium hydroxide solution containing 80 g of NaOH and 54 g of H₂O, we will follow these steps:

### Step 1: Calculate the molar mass of NaOH
The molar mass of NaOH can be calculated by adding the atomic masses of its constituent elements:
- Sodium (Na) = 23 g/mol
- Oxygen (O) = 16 g/mol
- Hydrogen (H) = 1 g/mol

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