A nurse is preparing to administer morphine sulfate 2 mg IV bolus. Available is morphine sulfate 10 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use trailing zero.)

Given: Desired dose: Morphine sulfate 2 mg IV bolus Available concentration: Morphine sulfate 10 mg/mL To find: Volume to administer (in mL) Step 1: Set up the proportion (Desired dose) / (Available concentration) = Volume to administer Step 2: Substitute the values Plugging in the given values, we get: (2 mg) / (10 mg/mL) = Volume to administer Step 3: Simplify To simplify, we can invert the denominator and multiply: (2 mg) x (1 mL / 10 mg) = Volume to administer The "mg" units cancel out, leaving us with: (2 x 1 mL) / 10 = Volume to administer Step 4: Calculate Performing the multiplication and division, we get: 2 mL / 10 = Volume to administer 0.2 mL = Volume to administer