Do Now Silently think about and respond: When the bell rings After the bell (2 min) In your seat: With pen/pencil With Notebook With Handout Silent and ready for Do Now Silently think about and respond: What is our Big Goal? How do we measure our progress each day? Still needs Do Now

Agenda  Do Now (5 min) Warm Up (25 min) Notes: Limiting Reagent (20 min) Group Practice (15 min) Independent Practice(10 min) Exit Slip (10 min) Closeout (2 min)  Agenda

Stoichiometry: Day #4 Objectives: Define limiting and excess reactants Solve for the limiting reactant using stoichiometry

CH4 + 2O2  CO2 + 2H2O I do: How many moles of CO2 will be produced if 5 moles of O2 react with methane, CH4? We do: How many moles of H2O will be produced when 3 moles of CH4 react with Oxygen? You do: Questions # 4, 5, 8 & 9 Warm Up 20 min

Guiding Question What is a real- life example of stoichiometry?

Vocabulary and Definitions Limiting Reactant: the reactant that runs out first and thus limits the amounts of products that can form Excess Reactant: the reactant that is not completely consumed in the reaction

Turn & Discuss How many servings of fudge can be made? What is the limiting ingredient? How much cream will remain? How much of the milk chocolate chips will remain? Turn & Discuss Recipe for FUDGE 1 package of semi-sweet choc. chips 1 can of sweetened condensed milk 1 Tbsp of butter 1 tbsp of cream ½ cup of milk chocolate chips (Mix all ingredients and spread in pan. Cool until hardened. ) 3 packs of semi-sweet chips 6 cans of sweetened condensed milk 6 tbsp of butter 5 tbsp of cream 3 cups of milk chocolate chips

Identifying Limiting Reagents Circle givens and write them in 2 separate boxes. Convert both to what you are looking for. See which one makes less (Limiting Reagent)! Identifying Limiting Reagents

Finding The Limiting Reagent 3.2 mol of SiO2 is reacted with 15.1 mol of HF. How many grams of water will form? What is the limiting reactant? What is excess reactant? Finding The Limiting Reagent Steps for Solving LR Problems: Circle givens and write them in 2 separate boxes. Convert both to what you are looking for. See which one makes less (Limiting Reagent)!

Finding The Limiting Reagent Nitrogen gas can be prepared by passing gaseous ammonia over solid copper(II) oxide at high temperatures. The other products of the reaction are solid copper and water vapor. How many moles of N2 are formed when 8.1moles of NH3 is reacted with 9.4 moles of CuO? 2NH3(g) + 3CuO(s)  N2(g) + 3Cu(s) + 3H2O(g) Finding The Limiting Reagent Steps for Solving LR Problems: Circle givens and write them in 2 separate boxes Convert both to what you are looking for. See which one makes less (Limiting Reagent)!

Finding The Limiting Reagent moles 12.5 moles of iodine(V) oxide, I2O5, reacts with 6.75 grams of carbon monoxide, CO according to the equation below. How many moles of I2 are formed and what is the limiting reagent? I2O5(g) + 5 CO(g)  5 CO2(g) + I2(g) Finding The Limiting Reagent Steps for Solving LR Problems: Circle givens and write them in 2 separate boxes Convert both to what you are looking for. See which one makes less (Limiting Reagent)!

Group Practice How What 15 minutes Ask questions of your partners C: 1 - 2, only on task conversation H: Raise hand, move on to next question until I am available A: Completing questions M: In clusters. 3 Hall passes. P: Answering questions on the handout, using notes 15 minutes Ask questions of your partners Complete practice on back-side of notes

Independent Practice How What 15 minutes Skip Part C C: 0 – 1, only on task conversation H: Raise hand, move on to next question until I am available A: Completing questions M: In clusters. 3 Hall passes. P: Answering questions on notebook paper, using notes, head up, using boxes 15 minutes 3 minutes to answer your question Share and compare Skip Part C Complete practice on slip of paper Do NOT write on the handout

Exit Slip How? What? (5 min) C – No talking H – Raise hand A – Taking exit slip M – In seat P – Completing exit slip without notes and turning in If you finish early, summarize what you learned at the bottom of your notes OR answer today’s guiding question

4NH3(g) + 5O2(g)  4NO(g) + 6H2O(g) Exit Slip 4NH3(g) + 5O2(g)  4NO(g) + 6H2O(g)   How many moles of water will form if 3.50 moles of NH3 react with 3.58 moles of O2? What is the limiting reactant? Using the definition of limiting reactant, explain how you know.