A client with a gonorrhea infection receives a prescription for a single dose of ceftriaxone 250 mg IM. The medication is available in a 1 gram vial. The instructions for reconstitution state, "For IM use, add 2.1 mL sterile water for injection. Resulting solution provides an approximate concentration of 350 mg per mL." How many mL should the practical nurse (PN) administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)