In this chapter, you will be introduced to the mole as the central unit in measuring the amount of a substance. Because the mole establishes the relationship between the number of particles involved in a reaction and the mass of the reactant or product, the mole is used to convert between moles and mass, between moles and particles, and between moles and volume. You will also be introduced to Avogadro's number and how mole relationships are used to determine percentage composition, as well as empirical and molecular formulas.

In this chapter, you will learn: to define a mole to identify and use Avogadro's number to define molar mass to convert among the number of particles, moles, and mass of a substance to use percentage composition to determine the formula of a substance to find the empirical and molecular formulas