Using 10 grams of a 15% boric acid ointment, the pharmacist will manufacture a 12% ointment. how many milligrams of diluent is required? round the answer to the nearest wholenumbe

Use equation C1M1+C2M2=CM

C1=15%, M1=10000 mg (starting ointment)

C2=0% M2=to be found (diluent)

C=12% M=M1+M2 (product)

Solve for M2

0.15*10000+0*M2 = 0.12 (10000+M2)

M2 = (0.15-0.12) * 10000/0.12=2500 mg

Answer: 2500 mg of diluent is required.