A nurse is preparing to administer dimercaprol 3 mg/kg IM to an adolescent who weighs 79 lb. Available is dimercaprol injection 100 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.)

Step-by-Step Solution: Convert the adolescent's weight from pounds to kilograms. 1 pound is = 0.453592 kilograms. 79 pounds = 79 x 0.453592 = 35.793592 kilograms. Calculate the total dose of dimercaprol. The prescribed dose is 3 mg/kg. The adolescent weighs 35.793592 kg. The total dose = 3 mg/kg x 35.793592 kg = 107.380776 mg. Calculate the volume of dimercaprol injection to administer. The available dimercaprol injection is 100 mg/mL. To find the volume, we can set up a proportion: 100 mg / 1 mL = 107.380776 mg / x mL Cross-multiplying: 100x = 107.380776 Solving for x: x = 107.380776 / 100 = 1.07380776 mL Round the answer to the nearest tenth: 1.1 mL.