CH16 – Stoichiometry

Dates

• P4 – Wednesday, February 14th
• P5 – Wednesday, February 14th
• P7 – Thursday, February 15th

Class Business

• test update
• LNB update

New Idea – Stoichiometry

• we can use the mole map to relate substances in a chemical reaction
• the coefficients ARE the mole ratio
• so, we need a balanced reaction to do so, right?

Review – Balancing Reactions [Class Practice]

• Ch. 3 (100 ag)
• Ch. 3 (100 b & f only) [LINK TO PROBLEM]

Extend – Predicting Yield [Class Practice]

• For each problem above, predict the mass of the first product if 370 grams of the first reactant are completely used up
• Regroup and review – thoughts?

New Idea – Recipes!

Simple Cookie Recipe – Produces 1 dozen cookies

• 1/2 cup butter
• 1cup sugar
• 1 egg
• 1 tsp baking powder
• 1 tsp vanilla
• 1 cup flour

Kitchen Contents

• 4 sticks butter
• 2 lb bag sugar
• 1/2 dozen egg
• 8 oz. baking powder
• 8 fluid oz. vanilla
• 2 lb bag flour

Question: how many cookies can I make with the available contents?

• Do some calculations
• support your answer (show work! units!)
• What determines the outcome?