# DDC Chapter 9

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# Links for the Ninth Chapter

## Extra Help For Chapter 9

This video defines solutions, gives some examples, and then discusses what factors affect how well solutes dissolve in solvents.

This video gives you an animation that shows how salt dissolves in water.

This video gives you instruction on writing precipitation reactions. You don’t have to worry about the rules he talks about. You will always be told which compound is not soluble in water.

This video goes through three examples of calculating molarity

This video discusses molarity and how it relates to stoichiometry. If you just want an example of how to use molarity in stoichiometry, jump to 3:20 in the video.

This video gives you an example of using molarity in stoichiometry. You actually use molarity twice in this problem, which gives you more practice.

This video gives you a good idea of the difference between the two concentration units you learned in this chapter.

This video you two examples of working with molality.

This video you an example of a freezing point depression problem and a boiling point elevation problem.

This video you more examples of freezing point depression problems and a boiling point elevation problems.

## Interesting Links Related to Chapter 9

More from the guy with way too much time on his hands.

This video shows five different precipitation reactions in slow motion.

This video shows an interesting precipitation reaction that happens when milk and Coca Cola are mixed.

This video gives a good demonstraton of freezing point depression.

This video shows you how to make ice cream at home. The salt is added to the ice to lower the temperature so the ice cream can be made.

## Extra Problems for Chapter 9

Extra problems for Chapter 9
This gives you more practice on the problems in chapter 9. Here are the solutions.