1. Table of Contents
Chapter 11: The Mole
11.3: Moles of Compounds

2. 1 mole of ammonia (NH3) consists of: 1 mole of N atoms
The Mole: Basic Concepts
Moles of Compounds
1 mole of ammonia (NH3) consists of:
1 mole of N atoms
3 moles of H atoms
ratio : 1:3
1 mole of baking soda (NaHCO3) consists of:
1 mole of Na atoms
1 moles of H atoms
1 moles C atoms
3 moles O atoms
ratio : 1:1:1:3

3. 1 mol C atoms 2 mol Cl atoms 2 mol F atoms
The Mole: Basic Concepts
Moles of Compounds
In some calculations, you may need to convert moles of a compound to individual atoms in the compound.
Freon : CCl2F2 ratio 1:2:2
Conversion factors
1 mol C atoms mol Cl atoms 2 mol F atoms
1 mol CCl2F mol CCl2F2 1 mol CCl2F2

4. The Mole: Basic Concepts
Moles of Compounds
a) Example: How many moles of fluorine atoms are in 5.50 moles of Freon (CCl2F2)?
5.50 mol CCl2F2 2 mol F atoms
1 mol CCl2F2
= 11.0 mol F atoms

5. Practice: 5.00 mol Cl- 9.00 mol SO42-
Determine the number of chloride ions in 2.50 mol ZnCl2
Calculate the number of moles of sulfate ions in 3.00 mol Fe2(SO4)3.
5.00 mol Cl-
9.00 mol SO42-