Find the :
number of molecules in 1.8 g of `H_(2)O`.

Explanation

To find the number of molecules in 1.8 g of H₂O, we can follow these steps:

### Step 1: Calculate the molar mass of H₂O
The molar mass of water (H₂O) is calculated as follows:
- Hydrogen (H) has a molar mass of approximately 1 g/mol. Since there are 2 hydrogen atoms in H₂O, the total mass from hydrogen is:
\[ 2 \times 1 \, \text{g/mol} = 2 \, \text{g/mol} \]
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