The healthcare provider prescribes streptomycin 300 mg IM every 12 hours for a client with tuberculosis. The available vial is labeled, "Streptomycin 1 gram/2.5 mL." How many milliliters should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)

Desired dose in milligrams = 300 mg Convert the available concentration to mg/mL: Available concentration = 1 gram / 2.5 mL = 1000 mg / 2.5 mL = 400 mg/mL Calculate the volume to administer in mL: Volume to administer (mL) = Desired dose (mg) / Available concentration (mg/mL) = 300 mg / 400 mg/mL = 0.75 mL Round to the nearest tenth: Rounded volume = 0.8 mL