You will demonstrate on this test that you do molarity calculations. Your paper periodic table and a calculator may be used during the test, but nothing else . Solvent - the most abundant substance in a solution. Solute - the other substance in a solution. It is possible for a solution to have more than one solute.
Air is an example.
Concentration - comparison of the amounts of solute and solvent. Moles can be used to compare solutions, giving us the most common units of concentration. Study how the problem is solved, understanding each step in the conversion process. When you understand, use your calculator to find each answer with the proper number of significant digits. In the first two examples, the problem gives you a mass of solute in a volume of solution.