1. Stoichiometry

2.  ¾ cup sugar  3 cups flour  ½ cup butter  3 Tbls baking soda  Yield: 38 cookies  How many dozen cookies can you make if you only have 2 Tbls of baking soda?

3.  How many grams of NH 3 can be produced from 27 grams of H 2 ?

4.  gA → mol A  mol A → mol B  mol B → g B  Variations: L → mol molecule → mol

5.  Compares the actual results of an experiment to the theoretical (calculated) results % yield = Why may yield not be 100% of the expected value?

6.  Limits or determines the amount of product that can be formed because the reactant is fully used during the reaction  Calculate the theoretical product using each given reactant value and the lower yield will indicate the limiting reactant

7.  The reactant that is not completely used up in the chemical reaction  Calculate the amount of excess reactant needed using moles of the limiting reactant.

8.  N 2 + 3H 2 → 2NH 3 90 g 22.4 g