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Example #2The chemical reaction for producing pure copper (refining copper) is below. CuO = copper oxide2 CuO (s) + C(s) -----> 2 Cu(s) + CO 2 (g)___moles ___moles ___moles ___moles1.) Is this reaction balanced? How do you know?2.) Write down the amount of moles you see for each reactant and product under the equation.3.) A refiner needs to convert 955.0 g of CuO to pure Cu. What mass of C is needed for this reaction?***Remember, you need to convert to moles in order to use the chemical equation or the recipe!HOMEWORK Complete the problems below on a SEPARATE piece of paper!46
STEP 13: STOICHIOMETRY PART 21.) Balance the chemical equation 2.) convert to moles to use the recipe 3.) convert back to the unitsthat you need1. Given the unbalanced decomposition reaction of baking soda:NaHCO 3 (s) + heat ===> Na 2 CO 3 (s) + CO 2 (g) + H 2 O (g)NaHCO 3 = baking soda/sodium bicarbonateNa 2 CO 3 = sodium carbonateHow many grams of sodium carbonate (Na 2 CO 3 ) are produced by the decomposition of 42.0 grams of baking soda?What volumes of carbon dioxide and water are produced at STP?2. The catalytic decomposition of hydrogen peroxide (H 2 O 2 ) is:H 2 O 2 (aq) ===> H 2 O (l) + O 2 (g)Balance the reaction. How many moles of water and oxygen are produced by the decomposition of 68.0 grams ofhydrogen peroxide? How many molecules (particles) of water are produced? How many grams of oxygen areformed?3. If 156.0 grams of potassium metal reacts with water, then how many grams of potassium hydroxide are formed?What volume of hydrogen gas, in liters, is formed at STP ? Be sure to balance the reaction first.K (s) + H 2 O (l) KOH (aq) + H 2(g)47
Page 3 and 4: Chemical Changes on a Molecular Lev
Page 7 and 8: Mostly Cloudy Mini-Lab1.) Put on go
Page 9 and 10: STEP 3: EVIDENCE FOR CHEMICAL REACT
Page 11 and 12: *****AS PART OF YOUR HOMEWORK, PLEA
Page 13 and 14: 15.) The diagram below represents a
Page 15 and 16: Structure of an EquationAll chemica
Page 17 and 18: 4.) Fill out the following table ba
Page 19 and 20: Balancing Chemical EquationsBecause
Page 21 and 22: HomeworkFor each problem, balance t
Page 23 and 24: STEP 6: DIMENSIONAL ANALYSIS PART 1
Page 25 and 26: EX #4: How many seconds are in a ye
Page 27 and 28: 1.) How many nickels are in 10 dime
Page 29 and 30: STEP 7: DIMENSIONAL ANALYSIS PART 2
Page 31 and 32: STEP 8: MOLES & PARTICLESReview: Ba
Page 34 and 35: STEP 9: MOLES & GRAMSReview:1.) How
Page 36: HOMEWORKMolar MassDo the following
Page 39 and 40: 3.) At STP, what volume does 0.355
Page 41 and 42: Mole-Volume Conversions1. Determine
Page 43 and 44: 5. How many particles are there in
Page 45: Example #1: Now, try with a real ch
Page 49 and 50: 7. The Haber reaction produces ammo
Page 51 and 52: Name: Date: Period:Stoichiometry is
Page 53 and 54: Using stoichiometry, how many moles
Page 55 and 56: 4. What was the mass of the empty 5
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