A toddler weighs 45 lbs . The Physician orders medication to be administered at \( 0.5 \mathrm{~g} / \mathrm{kg} \). How many g will this patient require?

To calculate the medication required, first convert the toddler's weight from pounds to kilograms. There are approximately 2.2 pounds in a kilogram, so: \[ 45 \, \text{lbs} \div 2.2 \approx 20.45 \, \text{kg} \] Now, multiply the weight in kilograms by the medication dosage: \[ 20.45 \, \text{kg} \times 0.5 \, \text{g/kg} = 10.225 \, \text{g} \] Thus, the toddler will require approximately 10.23 g of medication.