The healthcare provider prescribes cefazolin 800 mg intramuscularly every 6 hours. The available vial is labeled, "Cefazolin 1 gram," and the instructions for reconstitution state, "For IM use, add 2.5 mL sterile water for injection to provide a total volume of 3.0 mL. How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)