Calculate the number of molecules in a drop of water weighing 0.048 g.

Explanation

To calculate the number of molecules in a drop of water weighing 0.048 g, we can follow these steps:

### Step 1: Determine the molecular mass of water (H₂O).
The molecular mass of water can be calculated as follows:
- Hydrogen (H) has an atomic mass of approximately 1 g/mol.
- Oxygen (O) has an atomic mass of approximately 16 g/mol.

Thus, the molecular mass of water (H₂O) is:
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