The number of molecules in 32 g of oxygen is ______

Explanation

To find the number of molecules in 32 grams of oxygen (O₂), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Molecular Weight of Oxygen (O₂)**:
- The atomic weight of oxygen (O) is approximately 16 g/mol. Since oxygen exists as a diatomic molecule (O₂), the molecular weight of O₂ is:
\[
\text{Molecular weight of O₂} = 2 \times 16 \, \text{g/mol} = 32 \, \text{g/mol}
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