Chapter 9 Stoichiometry

Pancake Recipe 1 cup flour 2 eggs ½ cup water ¼ tsp baking powder Makes 5 pancakes We can write this recipe as an equation.

1 cup flour + 2 eggs + ½ cup water + ¼ tsp. baking powder → 5 pancakes If I have a 3 cups of flour how many pancakes can I make?

1 cup flour + 2 eggs + ½ cup water + ¼ tsp. baking powder → 5 pancakes How many cups of water will I need if I have 1 dozen eggs?

1 cup flour + 2 eggs + ½ cup water + ¼ tsp. baking powder → 5 pancakes How many tsp. of baking powder will I need to make 13 pancakes?

Chemical Equations are Recipes for Chemicals

IT TAKES MOLES TO MOVE 5C + 2SO2 → CS2 + 4CO How do we interpret this equation? 5 mol C + 2 mol SO2 → 1 mol CS2 + 4 mol CO IT TAKES MOLES TO MOVE

IT TAKES MOLES TO MOVE 5C + 2SO2 → CS2 + 4CO 7.42 mol C will produce how many mol CO? IT TAKES MOLES TO MOVE

IT TAKES MOLES TO MOVE 5C + 2SO2 → CS2 + 4CO 3 mol CS2 require how many mol C? IT TAKES MOLES TO MOVE

IT TAKES MOLES TO MOVE C6H12O6 + 6O2 → 6CO2 + 6H2O 3.60 mol C6H12O6 produce how many mol CO2? IT TAKES MOLES TO MOVE

IT TAKES MOLES TO MOVE 2KClO3 → 2KCl + 3O2 5.42 mol KClO3 will produce how many mol O2? IT TAKES MOLES TO MOVE