Chapter 1, Problem 1.86E

Human blood typically contains 1.04 kg/L of platelets. A 1.85 pints of blood would contain what mass (in grams) of platelets? (1 gallon = 3.785 L, 1 gallon = 8 pints).

Nurses are often required to calculate dosages. That is, they must check the order that a doctor has given for the administration of a drug and decide whether the dosage is correct. To calculate correctly they must convert between different metric units. For example, 1,000 milligrams (mg) = 1 gram (g); and 1,000 micrograms (mcg) = 1 mg. - Suppose a doctor has ordered a dose of 0.1 gram of a medication. The drug comes in a solution concentration of 300 mg per milliliter. How many milliliters of this solution is required?

The recommended calcium intake for teenagers is 1300 mg per day. A glass of milk contains 305 mg of calcium. One glass contains a volume of8 fluid ounces. How many liters of milk should a teenager drink per day to get the recommended amount of calcium? One fluid ounce equals 29.6 mL.