Glucose (dextrose) solutions are given intravenously to patients combined with other drugs. Different concentrations of glucose are used for different purposes. A 5% (w/w) glucose solution is commonly used. The density of this solution is 1.02 g `mL^(-1)`.
How many molecules of glucose are present in 250 mL of the solution?

Explanation

To find the number of glucose molecules in a 250 mL solution of 5% (w/w) glucose, we can follow these steps:

### Step 1: Determine the mass of the solution
Given that the density of the solution is 1.02 g/mL, we can calculate the mass of 250 mL of the solution.

\[ \text{Mass of solution} = \text{Volume} \times \text{Density} = 250 \, \text{mL} \times 1.02 \, \text{g/mL} = 255 \, \text{g} \]
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