17.If you add 8 ml of sterile water for injection to a vial of 3g penicillin that has a powder volume of 2 ml. what is t

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17.If you add 8 ml of sterile water for injection to a vial of 3g penicillin that has a powder
volume of 2 ml. what is the concentration of the drug in the solution?( Hint: total
Volume = 100ml
18.Change 1:250 to percent strength.
19.A prescription for amoxicillin 250 mg # 30 has a usual and customary price of $8.49 the
acquisition cost of amoxicillin 250 mg # 30 is $2.02. What is the gross profit?
20. Motrin suspension for children has a concentration of 100 mg /5ml.
A physician orders 200mg twice a day. How many ml will patient receive in a day?