1. “The solution and melting processes are the same.” This misconception is illustrated by the conversation: Warning: “Are you going out? It’s raining
                            very hard!” Response: “Don’t worry, I won’t melt.”

                    2. “It doesn’t matter whether a liter of solution or 1000 g of solvent are used in calculations.” Because molarity and molality are very similar in dilute
                            aqueous solutions, students often assume that the above statement is true. To avoid this confusion, use solvents with densities other than
                            Approximately 1.0 g/mL and check aqueous solution calculations very carefully to insure that the right units are being used.

Decision Making

            Challenge students to consider the practical methods for desalination of sea water.  Processes that have been considered include reverse osmosis, ion
            exchange, freezing, nuclear-powered distillation, and solar vaporization and recondensation. Have them evaluate the relative costs, volume of water per unit
            of space required, and other factors that they feel are important to finding the best solution to the long term water shortage problem that exists in many parts
            of the world.

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