chapter 9 stoichiometry. pancake recipe 1 cup flour 2 eggs ½ cup water ¼ tsp baking powder makes 5...
TRANSCRIPT
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
5C + 2SO2 → CS2 + 4CO
• How do we interpret this equation?
5 mol C + 2 mol SO2 → 1 mol CS2 + 4 mol CO
IT TAKESIT TAKES MOLESMOLES TOTO MOVEMOVE
5C + 2SO2 → CS2 + 4CO
• 7.42 mol C will produce how many mol CO?
IT TAKESIT TAKES MOLESMOLES TOTO MOVEMOVE
5C + 2SO2 → CS2 + 4CO
• 3 mol CS2 require how many mol C?
IT TAKESIT TAKES MOLESMOLES TOTO MOVEMOVE
C6H12O6 + 6O2 → 6CO2 + 6H2O
• 3.60 mol C6H12O6 produce how many mol CO2?
IT TAKESIT TAKES MOLESMOLES TOTO MOVEMOVE
2KClO3 → 2KCl + 3O2
• 5.42 mol KClO3 will produce how many mol O2?
IT TAKESIT TAKES MOLESMOLES TOTO MOVEMOVE