1. Introduction to Stoichiometry What is Mole Ratio? How can I determine mole ratio from balanced equation?

2. Can you cook? Can you follow a recipe?

3. How do ingredients form products? Reactants  Products

4. What is used to make “products” cookies?

5. What is Stoichiometry? Wikipedia Answer: branch of chemistry that deals with the relative quantities of reactants and products in chemical reactionschemistryreactantsproducts My Answer: recipe for reactions Stoichiometry ~ Cooking

6. How do you make a ham sandwich? Gather Ingredients (Chemical Reactants) Combine Ingredients (Rearrange Reactants) Make Sandwich (Form Products)

7. Check Kitchen Khemistry HW What is the ratio of bread to ham? 2:1

8. What is Mole Ratio? Balanced equations reveal molar ratios! Molar Quantities are derived from Coefficients Moles = Coefficients

9. Balance this equation! _____ N 2 (g) + _____H 2 (g)  ______ NH 3 (g) 1 3 2 ATOMS MOLECULES MOLES 2 6 8 1 3 2 1 32

10. USE the Balanced Equation! _____ N 2 (g) + _____H 2 (g)  ______ NH 3 (g) What is the molar ratio of Nitrogen to Hydrogen? 1 3 2 Nitrogen : Hydrogen 1 : 3

11. Importance of Molar Ratios Molar ratios help to connect amounts of reactants. How many sandwiches could I make with 4 slices of bread and 2 slices of ham? 2 Sandwiches Ratio of Bread: Ratio of Ham 2: 1

12. Apply to the Balanced Equation How many moles of Ammonia could I make from 3 moles of Nitrogen? _____ N 2 (g) + _____H 2 (g)  ______ NH 3 (g) 1 3 2 GIVEN 3 mol N 2 mol N 2 mol NH 3 1 2 6 mol NH 3