Compute the number of O atoms in 54 g of water. `M(H_(2)O) = 18 g`.

Explanation

To compute the number of oxygen atoms in 54 g of water (H₂O), we can follow these steps:

### Step 1: Determine the number of moles of water in 54 g.
The molar mass of water (H₂O) is given as 18 g/mol.

Using the formula:
\[
\text{Number of moles} = \frac{\text{mass}}{\text{molar mass}}
...