A nurse is preparing to administer ferrous sulfate 120 mg PO. Available is ferrous sulfate syrup 90 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.)

Given: Prescribed dose: 120 mg of ferrous sulfate Available concentration: 90 mg/5 mL Steps to solve: Determine the volume to be administered: Set up a proportion to solve for the unknown volume (X): 90 mg/5 mL = 120 mg/X mL Cross-multiplying gives us: 90 mg x X mL = 120 mg x 5 mL Simplifying: 90X = 600 Solving for X: X = 600 / 90 = 6.67 mL Round to the nearest tenth: 6.7 mL