A nurse is preparing to administer sertraline 0.05 g PO to a school-age child who has obsessive-compulsive disorder. Available is sertraline oral solution 20 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Convert Grams to Milligrams: The prescribed dose is 0.05 grams (g). We need to convert this to milligrams (mg) because the available medication is in mg/mL. There are 1000 milligrams in 1 gram (1 g = 1000 mg). So, 0.05 g x 1000 mg/g = 50 mg Set up the Dosage Calculation: We need to find out how many mL of the sertraline solution contain 50 mg. The available concentration is 20 mg/mL. This means there are 20 mg of sertraline in every 1 mL of solution. Divide the Desired Dose by the Concentration: Divide the desired dose (50 mg) by the concentration (20 mg/mL): 50 mg / 20 mg/mL = 2.5 mL