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

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

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 2 mol Cl atoms 2 mol F atoms 1 mol CCl2F2 1 mol CCl2F2 1 mol CCl2F2

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

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-