Answer
3.0 mL of chlorpromazine are administered to the patient.
Work Step by Step
1. Use the definition of percent (m/v) to calculate the volume in mL:
$2.5\%$ (m/v) $ chlorpromazine $ solution : $$ 2.5 \space g \space chlorpromazine = 100 \space mL \space solution$$
$$0.075 \space g \space chlorpromazine \times \frac{100 \space mL \space solution}{2.5 \space g \space chlorpromazine} = 3.0 \space mL \space solution$$
