1.) A TPN requires the addition of 15 units of regular insulin U-100. A 10ml vial of insulin contains 1,000 units. How many ml of insulin should be added to the TPN?
2) How many mg of red color should be used in preparing 5 liters of a 0.01% solution?
3) How many ml of a 4% stock solution of silver nitrate contain 150mg of silver nitrate?