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[DOC File]Percent Yield
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Use the balanced equation to find out how many liters of sulfur dioxide are actually produced at STP if 1.5 x 1027 molecules of zinc sulfide are reacted with excess oxygen and the percent yield is 75%. 2 ZnS(s) + 3 O2(g) ( 2 ZnO(s) + 2 SO2(g) 1.5. x. 1027 molecules excess x L = theoretical yield. 4. The Haber process is the conversion of nitrogen and hydrogen at high pressure into ammonia, as ...
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[DOC File]Balancing Equations Practice Worksheet
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Note to students: Whenever balancing an equation, it is acceptable to leave spaces blank instead of writing “1’ – in chemistry, they mean the same thing. 1) 1. AlBr3 + 3. K ( 3. KBr + 1. Al. 2) 1. FeO + 1. PdF2 ( 1. FeF2 + 1. PdO. 3) 1. P4 + 6. Br2 ( 4. PBr3. 4) 2. LiCl + 1. Br2 ( 2. LiBr + 1. Cl2. 5) 1. PbBr2 + 2. HCl ( 2. HBr + 1. PbCl2 ...
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[DOC File]Name________________________________ Period_______ Date
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Percent Equation 3 “a is p % of b” For problems 1-3, set up the problems using the percent equation. Do not solve. 1) 20 is what % of 140? 2) What is 30% of 60? 3) 40 is 10 % of what? For problems 4-12, set up the problems using the percent equation, and then solve. 4) 34 is 50 % of what? 5) 5 is 20 % of what? 6) What is 15% of 90? 68 25 13.5
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[DOC File]Percent Yield Worksheet
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Using the equation for percent yield, the . Percent Yield. of this experiment was . 81.39%. 1) A student adds 200.0g of C7H6O3 to an excess of C4H6O3, this produces C9H8O4 and C2H4O2. Calculate the percent yield if 231 g of aspirin (C9H8O4) is produced in an experiment. ___ C7H6O3 + ___C4H6O3 ( ___C9H8O4 + ___C2H4O2 . 2) According to the following equation, Calculate the percentage yield if ...
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[DOC File]Solving Percent Problems using - Weebly
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What percent of the weight of a bee hummingbird is the weight of an ostrich? 15. The U.S. Postal Service handles 170,000,000,000 pieces of mail each year. This is 40% of the world’s total. How many pieces of mail are sent each year? 16. The weight of a nickel is 80% of the weight of a quarter. If a nickel weighs 5 grams, how much does a quarter weigh? A dime weighs 50% as much as a nickel ...
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[DOC File]LIMITING REACTANT & % YIELD PRACTICE WORKSHEET
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5) If 11.3 grams of sodium chloride are formed in the reaction described in problem #2, what is the percent yield of this reaction? Limiting Reagent Worksheet. All of the questions on this worksheet involve the following reaction: When copper (II) chloride reacts with sodium nitrate, copper (II) nitrate and sodium chloride are formed.
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[DOC File]PERCENT ERROR WORKSHEET
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To find the percent of error, you find the difference between the predicted value or amount and the actual value (subtracting the absolute value of the numbers so that you do not get negatives). The numerator is this difference. Next you divide by the denominator which is the estimated or predicted amount. You will get a decimal outcome. The last step is to multiply your answer by 100 to ...
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[DOC File]Name________________________________ Period_______ Date
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Percent Equation 1 “a is p % of b” 1) 16 is what % of 200? 2) 15 is what % of 60? 3) 40 is what % of 50? 8% 25% 80%. 4) 24 is 50 % of what? 5) 5 is 20 % of what? 6) 20 is 60% of what? 48 25 33.33. 7) What is 14 % of 120? 8) What is 22 % of 150? 9) What is 5 % of 50? 16.8 33 2.5. Title: Name_____ Period_____ Date_____ Author: Karen/McNabb Last modified by: Universal Lab Image Created Date ...
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[DOC File]PERCENT APPLICATIONS WORKSHEET
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percent? 15. A boat on sale last week for $8495.00 is marked up to $9995.00. What is the . percent. of price increase to the nearest . percent? 16. A carpet salesperson claims that a carpet on sale for $12.95 per square yard is . 30% off its original price. What was its original price? 17. A stereo costs $418.70, including 6% sales ax. How much was the sales tax itself? 19. Find the annual ...
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[DOC File]Molarity Worksheet
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where the left side of the equation is before dilution and the right side after dilution. 1. What is the concentration (molarity) of a solution of NaCl if 40. mL of a 2.5 M NaCl solution is diluted to a total volume of 500. mL? 2. A stock solution of 1.00 M NaCl is available. How many mL are needed to make 100.0 mL of 0.750 M . 3. What volume of 0.250 M KCl is needed to make 100.0 mL of 0.100 ...
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Percent equation worksheets