A nurse is preparing administer valproic acid 125 mg PO. Available is valproic acid syrup 250 mg/5 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.)

Determine the desired dosage: The nurse needs to administer 125 mg of valproic acid. Determine the volume per dose: The valproic acid syrup contains 250 mg per 5 mL. The nurse needs to administer 125 mg per dose. To find the volume per dose: 250 mg / 5 mL = 125 mg / x mL Cross-multiplying gives us: 250x = 625 Dividing both sides by 250, we get: x = 2.5 mL