The healthcare provider prescribes streptomycin 200 mg intramusculary every 12 hours. The vial is labeled, "Streptomycin 1 gram/2.5 mL". How many milliliters should the nurse administer? (Enter numerical value only. (If rounding is required, round to the nearest tenth.)

· Convert grams to milligrams: 1 gram = 1000 mg · Determine the concentration: The vial contains 1000 mg of streptomycin in 2.5 mL of solution. · Set up a proportion: (Desired dose / Concentration) Volume = Amount to administer (200 mg / 1000 mg) x 2.5 mL = X mL · Solve for X: 0.2 x 2.5 mL = 0.5 mL