Calculate the number of molecules in 33 g of `CO_2`.

Explanation

To calculate the number of molecules in 33 g of CO₂, we can follow these steps:

### Step 1: Determine the molecular weight of CO₂
The molecular weight of CO₂ (carbon dioxide) can be calculated as follows:
- Carbon (C) has an atomic weight of approximately 12 g/mol.
- Oxygen (O) has an atomic weight of approximately 16 g/mol.

Since CO₂ has one carbon atom and two oxygen atoms, the molecular weight is:
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