Final answer:
To administer a dose of 350 mg of Ampicillin, you will need to give 1.4 mL of the prepared solution, since it has a concentration of 250 mg per mL after dilution.
Step-by-step explanation:
To determine how many mL of ampicillin to give, we need to calculate the dosage based on the available concentration of the medication. The question pertains to calculating the correct dosage of Ampicillin to administer intramuscularly. The doctor has ordered 350 mg of Ampicillin to be given every 6 hours. The Ampicillin available is in a concentration where adding 3.5 mL diluent will provide a solution in which each mL contains 250 mg of the antibiotic. To find out how many mL should be administered for the ordered dosage, we use the concentration provided to perform the calculation:
350 mg (desired dose) divided by 250 mg/mL (available concentration) equals 1.4 mL.
Therefore, you will need to give 1.4 mL of the prepared Ampicillin solution to administer a dose of 350 mg.