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

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Presentation transcript:

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

Can you cook? Can you follow a recipe?

How do ingredients form products? Reactants  Products

What is used to make “products” cookies?

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

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

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

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

Balance this equation! _____ N 2 (g) + _____H 2 (g)  ______ NH 3 (g) ATOMS MOLECULES MOLES

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

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

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) GIVEN 3 mol N 2 mol N 2 mol NH mol NH 3