1. Finding and Using Molar Ratios The coefficients in a balanced chemical equation can be used to determine the relative number of molecules, formula units, or moles of a compound involved in a chemical reaction.

3. The coefficients in a balanced equation can be used to write a molar ratio. Molar ratios are conversion factors that can be used to relate: 1. Moles of product formed from a certain number of moles of reactant 2. Moles of reactant needed to form a certain number of moles of a product. 3. The number of moles of a particular reactant needed to completely react with a certain number of moles of a second reactant.

6. Use the following equation to answer the questions below: 2 CH 3 OH (l) + 3 O 2 (g) --> 2 CO 2 (g) + 4 H 2 O (l) 1. How many moles of water will be produced from the combustion of 0.27 moles of CH 3 OH? 2. How many moles of O 2 are needed to burn 2.56 moles of CH 3 OH? 3. How many moles of CO 2 are produced from the combustion of 5.25 moles of CH 3 OH? 4. How many moles of water are produced when 3.25 moles of CO 2 are formed?