Textbook Question

Chapter 8, Problem 152CP

A mixture of chromium and zinc weighing 0.362 g was reacted with an excess of hydrochloric acid. After all the metals in the mixture reacted, 225 mL dry of hydrogen gas was collected at 27°C and 750. torr. Determine the mass percent of Zn in the metal sample. [Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas; chromium reacts with hydrochloric acid to produce chromium(III) chloride and hydrogen gas.]

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2nd Edition

ISBN: 9781305079243

Author: Steven S. Zumdahl, Susan A. Zumdahl

Publisher: Cengage Learning

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Chemistry: An Atoms First Approach

Gases. 152CP

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## Chapter 8 Solutions

Chemistry: An Atoms First Approach

Ch. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Why do real gases not always behave ideally? Under...

Ch. 8 - Prob. 3ALQCh. 8 - Prob. 4ALQCh. 8 - Prob. 6ALQCh. 8 - Prob. 8ALQCh. 8 - Prob. 11ALQCh. 8 - Prob. 12ALQCh. 8 - Prob. 15ALQCh. 8 - Prob. 16ALQCh. 8 - Draw molecular-level views that show the...Ch. 8 - Prob. 20QCh. 8 - Prob. 21QCh. 8 - Prob. 22QCh. 8 - Prob. 23QCh. 8 - Prob. 24QCh. 8 - Prob. 25QCh. 8 - Consider two different containers, each filled...Ch. 8 - Prob. 27QCh. 8 - Prob. 28QCh. 8 - Prob. 29QCh. 8 - Prob. 30QCh. 8 - Prob. 31QCh. 8 - Prob. 32QCh. 8 - Prob. 33QCh. 8 - Prob. 34QCh. 8 - Prob. 35QCh. 8 - Prob. 36QCh. 8 - Prob. 37ECh. 8 - Prob. 38ECh. 8 - A sealed-tube manometer (as shown below) can be...Ch. 8 - Prob. 40ECh. 8 - A diagram for an open-tube manometer is shown...Ch. 8 - Prob. 42ECh. 8 - Prob. 43ECh. 8 - Prob. 44ECh. 8 - Prob. 45ECh. 8 - Prob. 46ECh. 8 - Prob. 47ECh. 8 - Prob. 48ECh. 8 - Prob. 49ECh. 8 - Prob. 50ECh. 8 - The Steel reaction vessel of a bomb calorimeter,...Ch. 8 - A 5.0-L flask contains 0.60 g O2 at a temperature...Ch. 8 - Prob. 53ECh. 8 - A person accidentally swallows a drop of liquid...Ch. 8 - A gas sample containing 1.50 moles at 25C exerts a...Ch. 8 - Prob. 56ECh. 8 - Prob. 57ECh. 8 - What will be the effect on the volume of an ideal...Ch. 8 - Prob. 59ECh. 8 - Prob. 60ECh. 8 - An ideal gas is contained in a cylinder with a...Ch. 8 - Prob. 62ECh. 8 - A sealed balloon is filled with 1.00 L helium at...Ch. 8 - Prob. 64ECh. 8 - Consider the following reaction:...Ch. 8 - A student adds 4.00 g of dry ice (solid CO2) to an...Ch. 8 - Air bags are activated when a severe impact causes...Ch. 8 - Concentrated hydrogen peroxide solutions are...Ch. 8 - In 1897 the Swedish explorer Andre tried to reach...Ch. 8 - Sulfur trioxide, SO3, is produced in enormous...Ch. 8 - A 15.0-L rigid container was charged with 0.500...Ch. 8 - An important process for the production of...Ch. 8 - Consider the reaction between 50.0 mL liquid...Ch. 8 - Urea (H2NCONH2) is used extensively as a nitrogen...Ch. 8 - Prob. 75ECh. 8 - Prob. 76ECh. 8 - Prob. 77ECh. 8 - A compound has the empirical formula CHCl. A...Ch. 8 - Prob. 79ECh. 8 - Given that a sample of air is made up of nitrogen,...Ch. 8 - Prob. 81ECh. 8 - Prob. 82ECh. 8 - Prob. 83ECh. 8 - Prob. 84ECh. 8 - Consider the flasks in the following diagram. What...Ch. 8 - Consider the flask apparatus in Exercise 85, which...Ch. 8 - Prob. 87ECh. 8 - At 0C a 1.0-L flask contains 5.0 102 mole of N2,...Ch. 8 - Prob. 89ECh. 8 - A tank contains a mixture of 52.5 g oxygen gas and...Ch. 8 - Prob. 91ECh. 8 - Helium is collected over water at 25C and 1.00 atm...Ch. 8 - At elevated temperatures, sodium chlorate...Ch. 8 - Xenon and fluorine will react to form binary...Ch. 8 - Methanol (CH3OH) can be produced by the following...Ch. 8 - In the Mthode Champenoise, grape juice is...Ch. 8 - Hydrogen azide, HN3, decomposes on heating by the...Ch. 8 - Prob. 98ECh. 8 - Some very effective rocket fuels are composed of...Ch. 8 - The oxides of Group 2A metals (symbolized by M...Ch. 8 - Prob. 101ECh. 8 - Prob. 102ECh. 8 - Prob. 103ECh. 8 - Prob. 104ECh. 8 - Prob. 105ECh. 8 - Prob. 106ECh. 8 - Prob. 107ECh. 8 - Prob. 108ECh. 8 - Prob. 109ECh. 8 - Prob. 110ECh. 8 - Prob. 111ECh. 8 - Prob. 112ECh. 8 - Prob. 113ECh. 8 - Prob. 114ECh. 8 - Prob. 115ECh. 8 - Prob. 116ECh. 8 - Prob. 117ECh. 8 - Prob. 118ECh. 8 - Prob. 119ECh. 8 - Prob. 120ECh. 8 - Prob. 121ECh. 8 - Prob. 122ECh. 8 - Prob. 123AECh. 8 - At STP, 1.0 L Br2 reacts completely with 3.0 L F2,...Ch. 8 - Prob. 125AECh. 8 - A 2.747g sample of manganese metal is reacted with...Ch. 8 - Prob. 127AECh. 8 - Cyclopropane, a gas that when mixed with oxygen is...Ch. 8 - The nitrogen content of organic compounds can be...Ch. 8 - Prob. 130AECh. 8 - A 15.0L tank is filled with H2 to a pressure of...Ch. 8 - A spherical glass container of unknown volume...Ch. 8 - Prob. 133AECh. 8 - A 20.0L stainless steel container at 25C was...Ch. 8 - Metallic molybdenum can be produced from the...Ch. 8 - Prob. 136AECh. 8 - Prob. 137AECh. 8 - One of the chemical controversies of the...Ch. 8 - An organic compound contains C, H, N, and O....Ch. 8 - Prob. 140AECh. 8 - The total volume of hydrogen gas needed to fill...Ch. 8 - Prob. 142AECh. 8 - Prob. 143CWPCh. 8 - Prob. 144CWPCh. 8 - A certain flexible weather balloon contains helium...Ch. 8 - Prob. 146CWPCh. 8 - A 20.0L nickel container was charged with 0.859...Ch. 8 - Consider the unbalanced chemical equation below:...Ch. 8 - Prob. 149CWPCh. 8 - Which of the following statements is(are) true? a....Ch. 8 - A chemist weighed out 5.14 g of a mixture...Ch. 8 - A mixture of chromium and zinc weighing 0.362 g...Ch. 8 - Prob. 153CPCh. 8 - You have an equimolar mixture of the gases SO2 and...Ch. 8 - Methane (CH4) gas flows into a combustion chamber...Ch. 8 - Prob. 156CPCh. 8 - Prob. 157CPCh. 8 - Prob. 158CPCh. 8 - You have a helium balloon at 1.00 atm and 25C. You...Ch. 8 - Prob. 160CPCh. 8 - You are given an unknown gaseous binary compound...Ch. 8 - Prob. 162CPCh. 8 - Calculate w and E when 1 mole of a liquid is...Ch. 8 - The preparation of NO2(g) from N2(g) and O2(g) is...Ch. 8 - In the presence of nitric acid, UO2+ undergoes a...Ch. 8 - Silane, SiH4, is the silicon analogue of methane,...Ch. 8 - Prob. 167IPCh. 8 - Prob. 168IPCh. 8 - Prob. 169MP

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A 19.9-mL volume of a hydrochloric acid solution reacts completely with a solid sample of magnesium carbonate, producing 183 mL of CO2 that is collected over water at 24.0C and 738 torr total pressure. The reaction is 2HCl(aq)+MgCO3(s)CO2(g)+H2O(l)+MgCl2(aq) What is the molarity of the HCl solution?

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Cyclopropane, a gas that when mixed with oxygen is used as a general anesthetic, is composed of 85.7% C and 14.3% H by mass. If the density of cyclopropane is 1.88 g/L at STP, what is the molecular formula of cyclopropane?

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A chemist weighed out 5.14 g of a mixture containing unknown amounts of BaO(s) and CaO(s) and placed the sample in a 1.50-L flask containing CO2(g) at 30.0C and 750. torr. After the reaction to form BaCO3(s) and CaCO3(s) was completed, the pressure of CO2(g) remaining was 230. torr. Calculate the mass percentages of CaO(s) and BaO(s) in the mixture.

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50 The first step in processing zinc metal from its ore, ZnS, is to react it with O2 according to the reaction 2ZnS(s)+3O2(g)2ZnO(s)+2SO2(g) If 620 kg of ZnS is to be reacted, what volume of oxygen at 0.977 atm 34.0 C is needed (at a minimum) to carry out this reaction?

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A mixture contained calcium carbonate, CaCO3, and magnesium carbonate, MgCO3. A sample of this mixture weighing 7.85 g was reacted with excess hydrochloric acid. The reactions are CaCO3(g)+2HCL(aq)CaCl2(aq)+H2O(I)+CO2(g)MgCO3(s)+2HCL(aq)MgCl2(aq)+H2O(I)+CO2(g) If the sample reacted completely and produced 1.94 L of carbon dioxide, CO2, at 25C and 785 mmHg, what were the percentages of CaCO3 and MgCO3 in the mixture?

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A 1.26-g sample of a gas occupies a volume of 544 mL at 27 C and 744 torr? What is the molecular formula and name of the gas if its empirical formula is C2H5.

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Assuming the volumes of all gases in the reaction are measured at the same temperature and pressure, calculate the volume of water vapor obtainable by the explosive reaction of a mixture of 725 mL of hydrogen gas and 325 mL of oxygen gas.

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Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of sulfuric acid. S(s)+O2(g)SO2(g)2SO2(g)+O2(g)2SO3(g) What volume of O2(g) at 350.C and a pressure of 5.25 atm is needed to completely convert 5.00 g sulfur to sulfur trioxide?

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99 Pure gaseous nitrogen dioxide (NO2) cannot be obtained, because NO2dimerizes, or combines with itself, to produce a mixture of NO2 and N2O4. A particular mixture of NO2, and N2O4 has a density of 2.39 g/L at 50Â°C and 745 torr. What is the partial pressure of NO2 in this mixture?

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