Introductory Chemistry: A Foundation
8th Edition
ISBN: 9781285199030
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 9.3, Problem 9.4SC
ercise 9.4 Hydrofluoric acid, an aqueous solution containing dissolved hydrogen fluoride, is used to etch glass by reacting with the silica,
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Phosphoric acid, a mild acid used among other things as a rust inhibitor, food additive, and etching agent for cavity repair by dentists, can be made from
elemental phosphorus in a two step process. In the first step, phosphorus and oxygen react to form diphosphorus pentoxide:
P,(s) + 50,(g)
2 P,0; (g)
In the second step, diphosphorus pentoxide and water react to form phosphoric acid (H,PO,):
P,0;(g) + 3H,0(1)
2 H;PO, (1)
Suppose the yield of the first step is 77.% and the yield of the second step is 67.%. Calculate the mass of phosphorus required to make 6.0 kg of phosphoric
acid.
Be sure your answer has a unit symbol, if needed, and is rounded to the correct number of significant digits.
What mass of water will be consumed from the reaction of 78 g of calcium carbide, CaC, with water in the following reaction?
CaC,(s) + 2H,0(1)
C,H;(g) + Ca(OH),(s)
Chapter 9 Solutions
Introductory Chemistry: A Foundation
Ch. 9.2 - ercise 9.1 Calculate the moles of CO2formed when...Ch. 9.3 - ercise 9.2 What mass of carbon dioxide is produced...Ch. 9.3 - ercise 9.3 Calculate the mass of water formed by...Ch. 9.3 - ur lab partner has made the observation that we...Ch. 9.3 - ercise 9.4 Hydrofluoric acid, an aqueous solution...Ch. 9.3 - ercise 9.5 In Example 9.6 we answered one of the...Ch. 9.5 - Lithium nitride, an ionic compound containing the...Ch. 9.6 - ercise 9.7 Titanium(IV) oxide is a white compound...Ch. 9 - elate Active Learning Question 2 from Chapter 2 to...Ch. 9 - You are making cookies and are missing a key...
Ch. 9 - Nitrogen (N2) and hydrogen (H2)react to form...Ch. 9 - Prob. 4ALQCh. 9 - ou know that chemical A reacts with chemical B....Ch. 9 - f 10.0 g of hydrogen gas is reacted with 10.0 g of...Ch. 9 - Prob. 7ALQCh. 9 - Prob. 8ALQCh. 9 - hat happens to the weight of an iron bar when it...Ch. 9 - Prob. 10ALQCh. 9 - What is meant by the term mole ratio? Give an...Ch. 9 - Which would produce a greater number of moles of...Ch. 9 - Consider a reaction represented by the following...Ch. 9 - Prob. 14ALQCh. 9 - Consider the balanced chemical equation...Ch. 9 - Which of the following reaction mixtures would...Ch. 9 - Baking powder is a mixture of cream of tartar...Ch. 9 - You have seven closed containers each with equal...Ch. 9 - Prob. 19ALQCh. 9 - Prob. 20ALQCh. 9 - Consider the reaction between NO(g)and...Ch. 9 - hat do the coefficients of a balanced chemical...Ch. 9 - he vigorous reaction between aluminum and iodine...Ch. 9 - Prob. 3QAPCh. 9 - hich of the following statements is true for the...Ch. 9 - or each of the following reactions, give the...Ch. 9 - or each of the following reactions, give the...Ch. 9 - Prob. 7QAPCh. 9 - Prob. 8QAPCh. 9 - onsider the balanced chemical equation...Ch. 9 - Prob. 10QAPCh. 9 - For each of the following balanced chemical...Ch. 9 - Prob. 12QAPCh. 9 - For each of the following balanced chemical...Ch. 9 - For each of the following balanced chemical...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - What quantity serves as the conversion factor...Ch. 9 - Prob. 18QAPCh. 9 - Using the average atomic masses given inside the...Ch. 9 - Using the average atomic masses given inside the...Ch. 9 - Using the average atomic masses given inside the...Ch. 9 - Using the average atomic masses given inside the...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - For each of the following unbalanced equations,...Ch. 9 - Prob. 26QAPCh. 9 - “Smelling salts,” which are used to revive someone...Ch. 9 - Calcium carbide, CaC2, can be produced in an...Ch. 9 - When elemental carbon is burned in the open...Ch. 9 - If baking soda (sodium hydrogen carbonate) is...Ch. 9 - Although we usually think of substances as...Ch. 9 - When yeast is added to a solution of glucose or...Ch. 9 - Sulfurous acid is unstable in aqueous solution and...Ch. 9 - Small quantities of oxygen gas can be generated in...Ch. 9 - Elemental phosphorus bums in oxygen with an...Ch. 9 - Prob. 36QAPCh. 9 - Ammonium nitrate has been used as a high explosive...Ch. 9 - If common sugars arc heated too strongly, they...Ch. 9 - Thionyl chloride, SOCl2, is used as a very...Ch. 9 - Prob. 40QAPCh. 9 - Prob. 41QAPCh. 9 - Explain how one determines which reactant in a...Ch. 9 - Consider the equation: 2A+B5C. If 10.0 g of A...Ch. 9 - According to the law of conservation of mass, mass...Ch. 9 - For each of the following unbalanced reactions,...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - Lead(II) carbonate, also called “white lead,” was...Ch. 9 - Copper(II) sulfate has been used extensively as a...Ch. 9 - Lead(II) oxide from an ore can be reduced to...Ch. 9 - If steel wool (iron) is heated until it glows and...Ch. 9 - A common method for determining how much chloride...Ch. 9 - Although many sulfate salts are soluble in water,...Ch. 9 - Hydrogen peroxide is used as a cleaning agent in...Ch. 9 - Silicon carbide, SIC, is one of the hardest...Ch. 9 - Prob. 59QAPCh. 9 - The text explains that one reason why the actual...Ch. 9 - According to his prelaboratory theoretical yield...Ch. 9 - An air bag is deployed by utilizing the following...Ch. 9 - The compound sodium thiosutfate pentahydrate....Ch. 9 - Alkali metal hydroxides are sometimes used to...Ch. 9 - Although they were formerly called the inert...Ch. 9 - Solid copper can be produced by passing gaseous...Ch. 9 - Prob. 67APCh. 9 - Prob. 68APCh. 9 - Prob. 69APCh. 9 - When the sugar glucose, C6H12O6, is burned in air,...Ch. 9 - When elemental copper is strongly heated with...Ch. 9 - Barium chloride solutions are used in chemical...Ch. 9 - The traditional method of analysis for the amount...Ch. 9 - For each of the following reactions, give the...Ch. 9 - Prob. 75APCh. 9 - Consider the balanced equation...Ch. 9 - For each of the following balanced reactions,...Ch. 9 - For each of the following balanced equations,...Ch. 9 - Prob. 79APCh. 9 - Using the average atomic masses given inside the...Ch. 9 - For each of the following incomplete and...Ch. 9 - Prob. 82APCh. 9 - Prob. 83APCh. 9 - It sodium peroxide is added to water, elemental...Ch. 9 - When elemental copper is placed in a solution of...Ch. 9 - When small quantities of elemental hydrogen gas...Ch. 9 - The gaseous hydrocarbon acetylene, C2H2, is used...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - For each of the following unbalanced chemical...Ch. 9 - Hydrazine N2H4, emits a large quantity of energy...Ch. 9 - Prob. 91APCh. 9 - Before going to lab, a student read in his lab...Ch. 9 - Consider the following unbalanced chemical...Ch. 9 - Prob. 94CPCh. 9 - Consider the following unbalanced chemical...Ch. 9 - Over the years, the thermite reaction has been...Ch. 9 - Consider the following unbalanced chemical...Ch. 9 - Ammonia gas reacts with sodium metal to form...Ch. 9 - Prob. 99CPCh. 9 - he production capacity for acrylonitrile (C3H3N)in...Ch. 9 - Prob. 1CRCh. 9 - erhaps the most important concept in introductory...Ch. 9 - ow do we know that 16.00 g of oxygen Contains the...Ch. 9 - Prob. 4CRCh. 9 - hat is meant by the percent composition by mass...Ch. 9 - Prob. 6CRCh. 9 - Prob. 7CRCh. 9 - Prob. 8CRCh. 9 - Prob. 9CRCh. 9 - Consider the unbalanced equation for the...Ch. 9 - Prob. 11CRCh. 9 - What is meant by a limiting reactant in a...Ch. 9 - Prob. 13CRCh. 9 - Prob. 14CRCh. 9 - Prob. 15CRCh. 9 - Prob. 16CRCh. 9 - A compound was analyzed and was found to have the...Ch. 9 - Prob. 18CRCh. 9 - Prob. 19CRCh. 9 - Prob. 20CRCh. 9 - A traditional analysis for samples containing...
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