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10. The unbalanced synthesis reaction between aluminum metal and oxygen is:Al (s) + O 2 (g) ===> Al 2 O 3 (s).If 6.02 X 10 25 molecules of aluminum oxide are produced, then how many grams of aluminum metal and oxygengas are needed?11. The decomposition of mercury (II) oxide to produce liquid mercury and gaseous oxygen is shown in this unbalancedreaction:HgO (s) + heat ===> Hg (l) + O 2 (g)How many grams of mercury (II) oxide are needed to produce 100.3 grams of liquid mercury ? What volume ofoxygen gas is formed at STP?12. The unbalanced synthesis reaction of hydrogen gas with chlorine gas produces hydrogen chloride gas:H 2 (g) + Cl 2 (g) ===> HCl (g)How many grams of hydrogen gas are needed to produce 146.4 grams of hydrogen chloride gas? What volume ofchlorine gas, at STP, is needed?50
Name: Date: Period:Stoichiometry is the relation between the quantities of that take part in a reaction. In other words, we can usestoichiomety to figure out how much of a product we will produce knowing the amount of reactants we start with.You will be conducting a lab in which you mix sodium hydrogen carbonate, NaHCO 3 , (baking soda) and acetic acid,CH 3 COOH , (vinegar) together and then you will observe the results. You will also predict the amount of carbon dioxide,water and sodium acetate (NaCH 3 COO) produced and will calculate the percent yield based on the amount that youactually recover.Please make sure you take good notes and observations because you will be writing a formal lab report on this lab. Thefollowing is the chemical reaction that will take place:NaHCO 3 (aq) + CH 3 COOH (aq) ----> CO 2 (g) + H 2 O (l) + NaCH 3 COO (aq)Baking soda + vinegar ----> carbon dioxide + water + sodium acetatePRE-LAB QUESTIONS1.) What are the reactants?2.) What are the products?3.) Is the chemical equation balanced or not? Show your work. If it is not balanced, please balance it!4.) What do you think the purpose of completing this lab is? Write your answers in complete sentences.PERCENT YIELD QUESTIONS5.) If we mixed 25 grams of sodium bromide (NaBr) with a large amount of potassium chloride (KCl), what will ourtheoretical yield of sodium chloride (NaCl) be (meaning – how many grams of sodium chloride are we supposed to getfrom this reaction?)The reaction is:NaBr + KCl ------> NaCl + KBr51
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
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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 and 46: Example #1: Now, try with a real ch
Page 47 and 48: STEP 13: STOICHIOMETRY PART 21.) Ba
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