+ WELCOME! 1. Grab the materials in your folder. 2. Get out your homework! 3. Get out your periodic table!

+ Trash, Chairs, and Talk Challenge (20pts) Small Business

+ 80%

+ Pedal to the Medal

+ What reacts completely the first baking soda or vinegar?

+ 1.Moles: The amount of __________ or _________________ needed to complete an equation. Scientific Notation

+ Determine how many moles of each substance are in the following equation: 2 C + 3 H 2  C 2 H 6 C:________H 2 :________C 2 H 6 :________ Scientific Notation

+ 2.Molar Ratio: The ratio of how much of one substance is needed to ____________ another substance. Scientific Notation

+ Using the equation below write the molar ratio for the following atoms and molecules. 2C + 3H 2  C 2 H 6 Ratio of Carbon to Hydrogen: Scientific Notation

+ Using the equation below write the molar ratio for the following atoms and molecules. 2C + 3H 2  C 2 H 6 Ratio of Hydrogen to C 2 H 6 : Scientific Notation

+ 3.Limiting Reactants: _________________ __________________ that runs out first. Scientific Notation

+ For each reactant: 1)Convert grams to moles (use the periodic table) 2)Convert moles to moles (use molar ratio) 3)Convert moles to grams (use the periodic table) A 2.00 g sample of ammonia is mixed with 4.00 g of oxygen. What is the limiting reactant? 4NH 3 + 5O 2  4NO 2 + 6H 2 O

+ For each reactant: 1)Convert grams to moles (use the periodic table) 2)Convert moles to moles (use molar ratio) 3)Convert moles to grams (use the periodic table) What is the limiting reactant when 10g of H 2 reacts with 5g of C? C + 2H 2  CH 4

+ Guided Practice Fake it till ya’ make it

+ Using the equations below write the molar ratio for the following atoms and molecules. Equation: 4K + O 2  2K 2 O Ratio of K to K 2 O: Ratio of O 2 to 2K 2 O:

+ Should you be shown college level material?

+ How many grams of K 2 O will be produced from 0.50g of K and.10g of O 2 ? For the reaction: 4K + O 2  2K 2 O

+ How many grams of K 2 O will be produced from 0.50g of K and.10g of O 2 ? 4K + O 2  2K 2 O Convert Grams to Moles Convert Moles to Moles Convert Moles to Grams

+ What would be the limiting reagent if 100g of Na 2 O and H 2 O were allowed to react? Na 2 O + H 2 O  NaOH Convert Grams to Moles Convert Moles to Moles Convert Moles to Grams

+ Methanol, CH 3 OH, which is used as a fuel in racing cars and in fuel cells, can be made by the reaction of carbon monoxide and hydrogen as seen below. CO + 2H 2  CH 3 OH Suppose 356g of CO and 65.0g of H 2 are mixed and allowed to react. Convert Grams to Moles Convert Moles to Moles Convert Moles to Grams

+ 4. The combustion of methane is given in the reaction below. CH 4 + O 2  CO 2 + 2H 2 O How much CO 2 can be produced if there are equal amounts of CH 4 and O 2 ? Convert Grams to Moles Convert Moles to Moles Convert Moles to Grams

+ 5. How many grams of Ca(OH) 2 will be formed in this reaction when 4.44 g of CaO and 7.77 g of water are available to react? CaO(s) + H 2 O(l)  Ca(OH) 2 (aq) Convert Grams to Moles Convert Moles to Moles Convert Moles to Grams

+ 6. If 2.5 moles of copper and 5.5 moles of AgNO 3 are available to react, what is the limiting reactant? Cu + 2AgNO 3  Cu(NO 3 ) 2 + 2Ag Convert Grams to Moles Convert Moles to Moles Convert Moles to Grams

+ 7. How many grams of hydrogen gas will be produced from the reaction of 3.00g of magnesium with 4.00g of hydrochloric acid? 2Mg + 2HCl  H 2 + 2MgCl Convert Grams to Moles Convert Moles to Moles Convert Moles to Grams

+ Independent Practice When you are done raise your hand and I will give you a POM You may not use notes on the POM THERE IS NO WASTED TIME IN THIS CLASS!

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