For answers to calculations, use the correct number of significant figures.The percentage of sodium hydrogen carbonate (NalHCOs, 84.01 gimol) in a powder for stomach upsets is found by titrating with 0.275 M hydrochloric acid (HCI). The balancedequution for the reaction that takes place isNaHCOs(s) + H"(aq)-Na (ag) + cO(g) + H,O)a) If 16.5 mil of hydrochloric acd is required to react with 0.500 g of the sample, what is the percentage by mass of sodium hydrogen carbonate in the sample?ANSWER:% NaHCOs by massb) The reaction between hydrochlaric acid and sodium hydrogen carbonate is neutralizationc) Aside from treating stomach upsets, sodium hydrogen carbonate is also added to make bread dough rise, and commonly placed in refrigerators to remove unwanted odors Itscommon name isType 7 to search fom your seved iefo

To calculate mass % of NaHCO3 in given mass of sample , we would need to calculate mass of NaHCO3 in…

For answers to calculations, use the correct number of significant figures. The percentage of sodium hydrogen carbonate (Nal ICO, 84.01 gimol) in a powder for stomach upsets is found by titrating with 0.275 M hydrochloric acid (HCI). The balanced equation lor the reaction that takes place is NaHCOs(s) + H"(aq) - Na"(aq) + CO:(9) + H;O) a) If 16.5 mL of hydrochloric acid is required to react with 0.500 g of the sample, what is he percentage by mass of sodium hydrogen carbonate in the sample? ANSWER: % NaHCOs by mass b) The reaction between hydrochloric acid and sodium hydrogen carbonate is neutralization c) Aside from treating stomach upsets, sodium hydrogen carbonate is also added to make bread dough rise, and commonly placed in refrigerators to remove unwanted odors Its common name is Type to searc from your seved nfo

For answers to calculations, use the correct number of significant figures. The percentage of sodium hydrogen carbonate (Nal ICO, 84.01 gimol) in a powder for stomach upsets is found by titrating with 0.275 M hydrochloric acid (HCI). The balanced equation lor the reaction that takes place is NaHCOs(s) + H"(aq) - Na"(aq) + CO:(9) + H;O) a) If 16.5 mL of hydrochloric acid is required to react with 0.500 g of the sample, what is he percentage by mass of sodium hydrogen carbonate in the sample? ANSWER: % NaHCOs by mass b) The reaction between hydrochloric acid and sodium hydrogen carbonate is neutralization c) Aside from treating stomach upsets, sodium hydrogen carbonate is also added to make bread dough rise, and commonly placed in refrigerators to remove unwanted odors Its common name is Type to searc from your seved nfo

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter6: Chemical Reactions: An Introduction

Section: Chapter Questions

Problem 20QAP: Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active...

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On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2HNO3(aq)+Na2CO3(aq)2NaNO3(aq)+H2O(l)+CO2(g) a. Calculate H for this reaction. Approximately 2.0 104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? (Hf for NaNO3(aq) = 467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of H, what was their major concern?
Gold metal will dissolve only in aqua regia, a mixture of concentrated hydrochloric acid and concentrated nitric acid in a 3:1 volume ratio. The products of the reaction between gold and the concentrated acids are AuCl4-(aq), NO(g), and H2O. The equation for this reaction where HNO3 and HCl are strong acids is Au(s)+4Cl(aq)+4H+(aq)+NO3(aq)AuCl4(aq)+NO(g)+2H2O(a) What stoichiometric ratio of hydrochloric acid to nitric acid should be used? (b) What volumes of 12 M HCl and 16 M are HNO3 required to furnish the Cl- and NO3- ions to react with 25.0 g of gold?
Ethanol, C2H5OH, is a gasoline additive that can be produced by fermentation of glucose. C6H12O62C2H5OH+2CO2 (a) Calculate the mass (g) of ethanol produced by the fermentation of 1.000 lb glucose. (b) Gasohol is a mixture of 10.00 mL ethanol per 90.00 mL gasoline. Calculate the mass (in g) of glucose required to produce the ethanol in 1.00 gal gasohol. Density of ethanol = 0.785 g/mL. (c) By 2022, the U. S. Energy Independence and Security Act calls for annual production of 3.6 1010 gal of ethanol, no more than 40% of it produced by fermentation of corn. Fermentation of 1 ton (2.2 103 lb) of corn yields approximately 106 gal of ethanol. The average corn yield in the United States is about 2.1 105 lb per 1.0 105 m2. Calculate the acreage (in m2) required to raise corn solely for ethanol production in 2022 in the United States.
Magnesium metal (a component of alloys used in aircraft and a reducing agent used in the production of uranium, titanium, and other active metals) is isolated from sea water by the following sequence of reactions: Mg2+(aq)+Ca(OH)2(aq)Mg(OH)2(s)+Ca2+(aq)Mg(OH)2(s)+2HCl(aq)MgCl2(s)+2H2O(l)MgCl2(l)electrolysisMg(s)+Cl2+Cl2(g) Sea water has a density of 1.026 g/cm3 and contains 1272 parts per million of magnesium a5 Mg2+(aq) by mass. What mass, in kilograms, of Ca(OH)2; is required to precipitate 99.9% of the magnesium in 1.00103 L of sea water?
Aqueous solutions of ammonium sulfide and mercury(II) nitrate react and a precipitate forms. (a) Write the overall balanced chemical equation and indicate the state (aq) or (s) for each compound. (b) Name each product. (c) Write the complete ionic equation. (d) Write the net ionic equation.
You are given a solid mixture of NaNO2 and NaCl and are asked to analyze it for the amount of NaNO2 present. To do so, you allow the mixture to react with sulfamic acid, HSO3NH2, in water according to the equation NaNO2(aq) + HSO3NH2(aq) NaHSO4(aq) + H2O() + N2(g) What is the weight percentage of NaNO2 in 1.232 g of the solid mixture if reaction with sulfa-mic acid produces 295 mL of dry N2 gas with a pressure of 713 mm Hg at 21.0 C?
Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting the stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a “burp”). Write the unbalanced chemical equation for this process.
A power plant is driven by the combustion of a complex fossil fuel having the formula C11H7S. Assume the air supply is composed of only N2 and O2 with a molar ratio of 3.76:1.00, and the N2 remains unreacted. In addition to the water produced, the fuels C is completely combusted to CO2 and its sulfur content is converted to SO2. In order to evaluate gases emitted at the exhaust stacks for environmental regulation purposes, the nitrogen supplied with the air must also be included in the balanced reactions. a Including the N2 supplied m the air, write a balanced combustion equation for the complex fuel assuming 100% stoichiometric combustion (i.e., when there is no excess oxygen in the products and the only C-containing product is CO2). Except in the case of N2, use only integer coefficients. b Including N2 supplied in the air, write a balanced combustion equation for the complex fuel assuming 120% stoichiometric combustion (i.e., when excess oxygen is present in the products and the only C-containing product is CO2). Except in the case of use only integer coefficients c Calculate the minimum mass (in kg) of air required to completely combust 1700 kg of C11H7S. d Calculate the air/fuel mass ratio, assuming 100% stoichiometric combustion. e Calculate the air/fuel mass ratio, assuming 120% stoichiometric combustion.
1. Sometimes a reaction can fall in more than one category. Into what category (or categories) does the reaction of Ba(OH)2(aq) + H+PO4(aq) fit? acid-base and oxidation-reduction oxidation-reduction acid-base and precipitation precipitation