We found that the mole is a very useful converstion between mass and number of particles. Since substances combine at the atomic level, we must keep track of the number of particles of each type in reactions. You should review the handout from class entitled "The Mole" which included example problems. Make sure that you are able to work these types problems with ease.
HW: Read the handout and review the example problems from "The Mole" handout; Read "The History of 6.02 times 10 to the 23rd" article.
