taprect number of significant figures.A. Precipitation of CaC,O4H,O from theCalculation ZoneSalt Mixturemil o3. Mass of salt mixture (g)Data Analysis, 1.0.8794. Mass of filter paper (g)1.8965. Mass of filter paper and CaC,O4•H2O (g)рaper2.1806. Mass of air-dried CaC,O4•H,O (g)B. Determination of Limiting ReactantData Analysis, 3.1. Limiting reactant in salt mixtureCaCl, 2H,O2. Excess reactant in salt mixtureData Analysis ecxbcipuu1. Moles of CaC,O,'H,O precipitated (mol)Data Analysis, 4.Show calculation.2. Moles of limiting reactant in salt mixture (mol)20See equation 8.1.3. Mass of limiting reactant in salt mixture (g)Show calculation.trotanjlData Analysis, 5.4. Mass of excess reactant in salt mixture (g)Equals mass of salt mixture minus mass of limiting reactant.Show calculation.5. Percent limiting reactant in salt mixture (%)Show calculation.6. Percent excess reactant in salt mixture (%)rtcbeccibFor Trials 2 and 3, the percent CaCl,-2H,O in the mixture was 39.7% and 28.4% respectively.What is the ayerage percent of CaCl:2H.Q in the sample? Data Analysis, B.

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Answered: taprect number of significant figures.…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter3: Chemical Reactions

Section: Chapter Questions

Problem 141QRT

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Use the web to determine the differences in the amounts of aluminum recycled in states where there are deposits on aluminum cans versus states where recycling is voluntary. What is the most reliable way to estimate this value? mat uncertainty is there in the estimate?
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.
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Page of 2 + ZOOM 1. Balance these equations. a. Al(s)+O2(g)¬→Al½O3(s) b. N2(g)+H2(g)→NH;(g) c. C,H6(1)+O2(g)→H2O(1)+CO2(g) 2. Balance the following equations. а. СаС2(8)+Н-О() --Са(ОН)2(s)+СH-(g) b. (NH4)2Cr2O7(s)→Cr2O3(s)+N2(g)+H2O(g) c. CH;NH2(g)+02(g)→CO2(g)+N2(g)+H2O(g) 3. An explosive whose chemical formula is C;H,N6O6 produces water, carbon dioxide, and nitrogen gas when detonated in oxygen. Write the chemical equation for the detonation reaction of this explosive. 4. A number of compounds are used in cement, and reactions among them occur when water is added. In one, CaO reacts with Al2O3 and water to form Ca3Al2(OH)12. Write a balanced chemical equation for this process. 5. Ethanol, C2H5OH, is found in gasoline blends used in many parts of North America. Write a balanced chemical equation for the combustion of C2H5OH to form CO2 and H2O. 6. Balance the following equations. a. reaction to produce "superphosphate" fertilizer: Ca3(PO4)2(s)+H2SO:(aq)→Ca(H,PO4)2(aq)+CaSO4(s) b.…

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