Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. a bottle contains 340 ml of insulin at a concentration of 20 mg/ml . what is the total mass of insulin in the bottle?

You are given the concentration in terms of milligrams per milliliter and volume in terms of milliliter. Through dimensional analysis, you know that you can end up with the unit of milligrams if you multiply the concentration with the volume. The solution is as follows:

Mass = Concentration* Volume
Mass = 20 mg/mL * 340 mL
Mass = 6,800 mg insulin