The density of water at room temperature is 1.0 g/mL. How many molecules are there in a drop of wate if its volume is 0.05 mL ?

Explanation

To find the number of molecules in a drop of water with a volume of 0.05 mL, we can follow these steps:

### Step 1: Calculate the mass of water
We know the density of water is 1.0 g/mL. We can use the formula:

\[ \text{Mass} = \text{Density} \times \text{Volume} \]
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