A nurse is preparing to administer potassium gluconate 40 mEq PO. Available is potassium gluconate liquid 20 mEq/15 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Calculation: Determine the desired dose: Ordered dose: 40 mEq Determine the available concentration of the medication: Available concentration: 20 mEq / 15 mL Calculate the volume needed to administer the desired dose: Formula: Volume (mL) = Desired dose (mEq) × (Volume of solution (mL) / Available dose (mEq)) = 40 mEq × (15 mL / 20 mEq) = 600 mL / 20 = 30 mL