Name Class Date Assessment Chapter Test B

Name Class Date Assessment Chapter Test B-Free PDF

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Name Class Date,Chapter Test B continued, 6 If a chemist calculates the maximum amount of product that could be. obtained in a chemical reaction he or she is calculating the. a theoretical yield,b percentage yield,c mole ratio. d actual yield, 7 The theoretical yield of a chemical reaction is generally. a greater than the actual yield,b less than the actual yield. c equal to the percentage yield,d greater than the percentage yield.
8 The most steps are required to solve stoichiometry problems when the. reactant is given in grams and the product is sought in. d number of atoms, PART II For each example list the given and unknown information. 9 given For the reaction represented by the,equation N2 3H2 2NH3 a chemist. must determine how many grams of,unknown nitrogen are needed to produce 500 g. of ammonia,10 given A chemist must determine how many. moles of H2 can be produced from,500 g of H20 in the reaction.
unknown represented by the equation,2Na 2H20 2NaOH H2. 11 given A chemist must determine how many,grams of carbon monoxide are needed. to produce 20 mol of C02 in the reac,unknown tion represented by the equation. 2CO 02 2C02, Copyright by Holt Rinehart and Winston All rights reserved. Modern Chemistry 80 Chapter Test,Name Class Date,Chapter Test B continued.
12 given Using the equation 2H20 2H2 02,a chemist must determine how many. unknown moles of oxygen can be produced from,50 mol of water. 13 given Using the equation S 02 S02 a,chemist must determine how many. unknown grams of sulfur are required to produce,800 g of sulfur dioxide. Write the correct equation or term in the space provided. 14 Give the correct mathematical expression for determining percentage yield. Percentage yield, 15 Fill in the steps required to find the number of grams of substance B.
produced from the number of grams of substance A,grams of A grams of B. 16 The conversion factor for deriving the number of moles of salicylic acid. CyHgOa from a given number of grams of salicylic acid is. 17 The substance that restricts the amount of other reactants used in a chemical. reaction is known as the, 18 The measured amount of product obtained from a chemical reaction is called. 19 The substance that is not completely used up in a chemical reaction is known. 20 If the theoretical yield for a chemical reaction is 100 g and the percentage. yield is 70 0 the actual yield is, Copyright by Holt Rinehart and Winston All rights reserved. Modern Chemistry 81 Chapter Test,Name Class Date,Chapter Test B continued. PART III Write the answers to the questions on the line to the left and show your. work in the space provided Use the table below to answer the questions. Element Symbol Atomic mass Element Symbol Atomic mass. Bromine Br 79 90 Lead Pb 207 2,Carbon C 12 01 Nitrogen N 14 01.
Chlorine CI 35 45 Oxygen 0 16 00,Hydrogen H 1 01 Potassium K 39 10. iodine 1 126 90 Sodium Na 22 99,Iron Fe 55 85 Sulfur S 32 07. 21 For the reaction represented by the equation,2Fe 02 2FeO how many grams of iron oxide. will be produced from 8 00 mol of iron when 02 is, 22 If cyclohexanol is burned as a fuel according to the. following equation how many moles of oxygen are,needed to produce 13 7 mol of carbon dioxide.
2C6H120 1702 12C02 12H20,23 For the reaction represented by the equation. Pb N03 2 2KI Pbl2 2KN03 how many,moles of lead iodide are produced from 300 g of. potassium iodide when Pb N03 2 is in excess,24 For the reaction represented by the equation. 2KC103 2KC1 302 how many grams of,potassium chlorate are required to produce. 160 g of oxygen, Copyright by Holt Rinehart and Winston All rights reserved.
Modem Chemistry 82 Chapter Test,Name Class Date,Chapter Test B continued. 25 According to the equation C3H8 502,3C02 4H20 when 02 is in excess how many. grams of carbon dioxide are produced from the,combustion of 250 g of ethane C3H8. 26 In the reaction represented by the equation,2Na 2H20 2NaOH H2 how many grams of. hydrogen are produced if 120 g of Na and 80 0 g,of H20 are available.
27 Calculate the percentage yield for the reaction. represented by the equation CH4 202,2H20 C02 when 1000 g of CH4 react with. excess 02 to produce 2300 g of C02, Use the equation Cl2 2KBr 2KCI Br2 for problems 28 30. 28 How many moles of potassium chloride are,produced from 119 g of potassium bromide when. Cl2 is in excess,29 How many grams of potassium chloride can be. produced from 300 g each of Cl2 and KBr, 30 What is the percentage yield if 200 g of Cl2 react.
with an excess of KBr to produce 410 g of Br2, Copyright by Holt Rinehart and Winston All rights reserved. Name Class Date Chapter Test B continued PART III Writethe answers to the questions on the line to the left and showyour work in the space provided Use thetable belowto answer the questions Element Symbol Atomic mass amu Bromine Br 79 90 Carbon C 12 01 Chlorine CI 35 45 Hydrogen H 1 01 iodine 1 126 90 Iron Fe 55 85 Element Symbol Atomic

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