Mole to Mole Conversions

Agenda Seek and Solve Mole-Mole Conversions Review for Quiz next class Notes Practice

Reminders Check grade- make sure everything is okay Extra Credit is due on Wednesday Quiz is on Wednesday Mole Conversion Problems Empirical Formula

Objective Convert between moles of one chemical to moles of another

Materials You Need

Review: Stoichiometry Branch of chemistry that deals with the quantitative relationships that exist between the reactants and products in a chemical reaction “Stochio” = Greek for element “metry” = measurement

Review: & 2 Step Mole Conversions Moles allow us to convert between particles, mass, and volume 1 mole G = 6.02 x 1023 particles G 1 mole G = Molar Mass (g/mol) G 1 mole G = 22.4 L G

Crumbs Inc. What if you needed 32 cookies, how much butter would you need? What if you had 3 cups of flour and wanted to use it all, how many eggs would you then need? Easy Chocolate Chip Cookies 2 cups flour 1.5 cups sugar 2 sticks butter 2 eggs 1 cup chocolate chips Combine ingredients, mix well. Grease cookie sheet. Preheat oven to 350 degrees. Spoon drop cookies onto sheet and bake 8-10 minutes. Yields 16 cookies

Mole Ratios Convert from chemical G to chemical W using molar ratios We get the number of moles from the coefficients in the balanced equation Coefficient = # moles in the reaction

Molar Ratios Convert from chemical G to chemical W using molar ratios We get the number of moles from the coefficients in the balanced equation Coefficient = # moles in the reaction

Practice Problem 1 How many moles of ammonia can be produced from 11 moles of nitrogen gas?

Practice Problem 2 If you want to react 5.2 moles of hydrogen gas, how many moles of nitrogen gas would be needed?