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Stoichiometry Solutions Library

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441 solutions

Stoichiometry

Q. Hydrogen gas is a very useful reagent with many uses in the petroleum, food, and chemical industries. Most hydrogen exists in covalently bonded mol...

Solved • Jul 2, 2020

Stoichiometry

Q. If you started with 0.151 mol of N2 and 0.453 mol of H2, and they completely reacted in the reaction vessel, determine the total moles of gas parti...

Solved • Jul 2, 2020

Stoichiometry

Q. How many O2 molecules are needed to react with 7.61 g of S?Express your answer numerically in units of molecules.Elemental S reacts with O2 to form...

Solved • Jul 1, 2020

Stoichiometry

Q. Consider the reaction2 D2(g) + O2(g) → 2 D2O(l)What is the mass of heavy water, D2O(l), produced when 4.50 g of O2(g) reacts with excess D2(g)?Expr...

Solved • Jul 1, 2020

Stoichiometry

Q. Consider the reaction2 H2(g) + O2(g) → 2 H2O(l)What is the mass of water, H2O(l), produced when 4.50 g of O2(g) reacts with excess H2(g)?Express yo...

Solved • Jul 1, 2020

Stoichiometry

Q. Balance the given chemical equation using whole-number coefficients.?D2(g) + ?O2(g) → ?D2O(l)Enter the coefficients in order separated by commas (e...

Solved • Jul 1, 2020

Stoichiometry

Q. What mass of oxygen is needed for the complete combustion of 8.10×10−3 g of methane?Express your answer with the appropriate units.The coefficients...

Solved • Jul 1, 2020

Stoichiometry

Q. What mass of water is produced from the complete combustion of 8.10×10−3 g of methane?Express your answer with the appropriate units.The coefficien...

Solved • Jul 1, 2020

Stoichiometry

Q. What mass of carbon dioxide is produced from the complete combustion of 8.10×10−3 g of methane?Express your answer with the appropriate units.The c...

Solved • Jul 1, 2020

Stoichiometry

Q. Part C. If 51.0 % of the SO2 could be removed by reaction with powdered calcium oxide, CaO, via the reaction SO2(g) + CaO(s) → CaSO3(s)how many ton...

Solved • Jul 1, 2020

Stoichiometry

Q. Part B. Assuming that the coal was 2.70 % sulfur by mass and that combustion was complete, calculate the number of tons of sulfur dioxide produced ...

Solved • Jul 1, 2020

Stoichiometry

Q. Part A. Assuming that the coal was 82.2 % carbon by mass and that combustion was complete, calculate the number of tons of carbon dioxide produced ...

Solved • Jul 1, 2020

Stoichiometry

Q. Part A. Set up two algebraic equations, one expressing the mass of carbon dioxide produced in terms of each reagent and the other expressing the ma...

Solved • Jul 1, 2020

Stoichiometry

Q. How many molecules (not moles) of NH3 are produced from 3.41×10−4 g of H2?Express your answer numerically as the number of molecules.Reaction of hy...

Solved • Jul 1, 2020

Stoichiometry

Q. How many grams of H2 are needed to produce 11.55 g of NH3?Express your answer numerically in grams.Reaction of hydrogen and nitrogen to form ammoni...

Solved • Jul 1, 2020

Stoichiometry

Q. How many grams of NH3 can be produced from 2.58 mol of N2 and excess H2?Express your answer numerically in grams.Reaction of hydrogen and nitrogen ...

Solved • Jul 1, 2020

Stoichiometry

Q. How many moles of NH3 can be produced from 16.5 mol of H2 and excess N2?Express your answer numerically in moles.Reaction of hydrogen and nitrogen ...

Solved • Jul 1, 2020

Stoichiometry

Q. You are provided with 3.40 mol of nitrogen monoxide gas. Using the balanced chemical equation completed in Part A, determine how many moles of oxyg...

Solved • Jul 1, 2020

Stoichiometry

Q. If you had excess aluminum, how many moles of aluminum chloride could be produced from 32.0 g of chlorine gas, Cl2?In the following chemical reacti...

Solved • Jul 1, 2020

Stoichiometry

Q. If you had excess chlorine, how many moles of aluminum chloride could be produced from 27.0 g of aluminum?In the following chemical reaction, 2 mol...

Solved • Jul 1, 2020

Stoichiometry

Q. Consider the formation of HCN by the reaction of NaCN (sodium cyanide) with an acid such as H2SO4 (sulfuric acid):2 NaCN(s) + H2SO4(aq) → Na2SO4(aq...

Solved • Jul 1, 2020

Stoichiometry

Q. Calculate the profit from producing 26.00 kg of propene oxide by this alternative green process.Express your answer numerically in dollars using th...

Solved • Jul 1, 2020

Stoichiometry

Q. A relatively simple way of estimating profit is to consider the difference between the cost (the total spent on materials and waste disposal) and t...

Solved • Jul 1, 2020

Stoichiometry

Q. Part B. If 14.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain? Express your answer to three significan...

Solved • Jul 1, 2020

Stoichiometry

Q. Part A. Given 7.80 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100% yield? Ex...

Solved • Jun 30, 2020

Stoichiometry

Q. A mixture of A and B contains a total of 5.8 mol. Both A and  B react with Z according to the following equations:A + Z → AZB + 2Z → BZ2The reactio...

Solved • Jun 25, 2020

Stoichiometry

Q. Use the balanced equation for the combustion of octane to determine how many moles of H2O are produced by the combustion of 27.0 moles of C8H18 2 C...

Solved • Jun 25, 2020

Stoichiometry

Q. The world burns the fossil fuel equivalent of 3×1012 kg of petroleum per year. Assume that all of this petroleum is in the form of octane (C8H18). ...

Solved • Jun 25, 2020

Stoichiometry

Q. The world burns the fossil fuel equivalent of 3×1012 kg of petroleum per year. Assume that all of this petroleum is in the form of octane C8H18. (a...

Solved • Jun 25, 2020

Stoichiometry

Q. Exactly 1 mol of H3PO4 contains how many moles of H, P, and O?

Solved • Jun 16, 2020

Stoichiometry

Q. How many mol of carbon are in 34.4 g of aluminum acetate?

Solved • Jun 16, 2020

Stoichiometry

Q. How many moles of carbon atoms are there in 0.500 moles of C2H6?

Solved • Jun 15, 2020

Stoichiometry

Q. The scene below represents a mixture of A2 (green) and B2 (blue) before they react to form AB3. limiting reactant.jpg What is the limiting reactant...

Solved • Jun 15, 2020

Stoichiometry

Q. Sodium reacts with oxygen to produce sodium oxide. 4 Na(s) + O2(g) → 2 Na2O(s)1. How many grams of Na2O are produced when 93.7 g of Na reacts?2. If...

Solved • Jun 15, 2020

Stoichiometry

Q. How many moles of PCl5 can be produced from 23.0 g of P4 (and excess Cl2)?

Solved • Jun 15, 2020

Stoichiometry

Q. When barium hydroxide reacts with sulfuric acid, barium sulfate and water are produced. The balanced equation for this reaction is: Ba(OH)2(aq) + H...

Solved • Apr 29, 2020

Stoichiometry

Q. How many moles of nitrogen are formed when 25.0 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.1 g/mol. 4 ...

Solved • Apr 29, 2020

Stoichiometry

Q. For each reaction, calculate the mass (in grams) of the product formed when 10.5 g of the underlined reactant completely reacts.Assume that there i...

Solved • Apr 23, 2020

Stoichiometry

Q. If 12.0g of MgSO4 • 7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain? Express your answer to three significant figur...

Solved • Mar 18, 2020

Stoichiometry

Q. When heated, KCIO3 decomposes into KCI and O2. 2KCIO3 → 2KCl+ 3O2 If this reaction produced 50.6 g of KCI, how much O2 was produced (in grams)?

Solved • Mar 17, 2020

Stoichiometry

Q. In a chemical reaction, exactly 2 mol of substance A react to produce exactly 3 mol of substance B. 2 A → 3B How many molecules of substance B are ...

Solved • Mar 17, 2020

Stoichiometry

Q. Determine the mass of oxygen in a 7.2-g sample of Al2(SO4)3. Express the mass in grams to two significant figures.

Solved • Mar 17, 2020

Stoichiometry

Q. Automotive air bags inflate when sodium azide, NaN3, rapidly decomposes into its component elements:2 NaN3(s) → 2 Na(s) + 3 N2(g)How many grams of ...

Solved • Nov 28, 2019

Stoichiometry

Q. How many grams of oxygen are formed when 5.30 moles of KOH are formed?4 KO(s) + 2 H2O(l) → 4 KOH(s) + O2(g) A) 21.2 g O2B) 84.8 g O2C) 170 g O2D) 5...

Solved • Oct 25, 2019

Stoichiometry

Q. Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements:2NaN3(s) → 2Na(s) + 3N2(g)How many grams of sodium...

Solved • Oct 25, 2019

Stoichiometry

Q. The formation of ammonia can be written as N2(g) + 3 H2(g) → 2NH3(g)How much ammonia is produced if 14.0 g of N2(g) is reacted with excess hydrogen...

Solved • Oct 3, 2019

Stoichiometry

Q. Consider the following reaction: 2 Al + 6 HCl → Al2Cl6 + 3 H2How many moles of HCl are required to produce 2.6 moles of hydrogen? Assume that there...

Solved • Oct 2, 2019

Stoichiometry

Q. Calcium carbide, CaC2, is an important preliminary chemical for industries producing synthetic fabrics and plastics. CaC2 may be produced by heatin...

Solved • Oct 1, 2019

Stoichiometry

Q. How many individual ions are in 18.2 grams of Al2S3?A. 7.30 × 1023 ions      B. 1.85 × 10 23 ions      C. 9.28 × 10 23 ions      D. 3.65 × 10 23 io...

Solved • Sep 18, 2019

Stoichiometry

Q. Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2): CaC2 (s) + 2 H2O (g) → Ca(OH)2 (s) + C2H2 (g)Production of 13 g of C2H2 requi...

Solved • Sep 13, 2019

Stoichiometry

Q. Given the following reaction:2H2O2 → 2H2O + O2How many moles of H2O will be produced from 42.0 g of H 2O2?_____ moles (round to three significant f...

Solved • Aug 25, 2019

Stoichiometry

Q. Balance the equation and solve the following questions.CH3CH3 + O2 → CO2 + H2Oa) How many moles of CH3CH3 are in 13.50g of CH3CH3b) If 13.50g of CH...

Solved • Aug 6, 2019

Stoichiometry

Q. How many grams of Li3N can be formed from 1.75 moles of Li? Assume an excess of nitrogen.6 Li(s) + N2(g) → 2 Li3N(s)a. 18.3 g Li3Nb. 58.3 g Li3Nc. ...

Solved • Aug 2, 2019

Stoichiometry

Q. Potassium hydroxide and phosphoric acid react to form potassium phosphate and water according to the equation.3KOH(aq) + H3PO4(aq) → K3PO4(aq) + 3H...

Solved • Jul 9, 2019

Stoichiometry

Q. When hydrochloric acid reacts with barium hydroxide, barium chloride and water are produced. The balanced equation for this reaction is: 2HCl (aq) ...

Solved • Jul 9, 2019

Stoichiometry

Q. Sodium reacts with oxygen to form sodium oxide and has the following balanced chemical equation: 4 Na + O2 → 2 Na 2O.How many mole(s) of oxygen gas...

Solved • Jul 9, 2019

Stoichiometry

Q. Chlorine reacts with oxygen to form Cl2O7 (l).PrefixMeaningMono-1Di-2Tri-3Tetra-4Penta-5Hexa-6Hepta-7Octa-8Nona-9Deca-10Write a balanced equation f...

Solved • Nov 12, 2018

Stoichiometry

Q. The organic molecules shown beloware derivatives of benzene in which additional six-membered rings are "fused" at the edges of the hexagons. The co...

Solved • Nov 12, 2018

Stoichiometry

Q. When magnesium metal is burned in air, two products are produced. One is magnesium oxide, MgO. The other is the product of the reaction of Mg with ...

Solved • Nov 12, 2018

Stoichiometry

Q. Potassium superoxide, KO2, is often used in oxygen masks (such as those used by firefighters) because KO2 reacts with CO2 to release molecular oxyg...

Solved • Nov 12, 2018

Stoichiometry

Q. Potassium superoxide, KO2, is often used in oxygen masks (such as those used by firefighters) because KO2 reacts with CO2 to release molecular oxyg...

Solved • Nov 12, 2018

Stoichiometry

Q. The ionic substance strontium oxide, SrO, forms from the direct reaction of strontium metal with molecular oxygen. The arrangement of the ions in s...

Solved • Nov 12, 2018

Stoichiometry

Q. An element X reacts with F2(g) to form the molecular product shown here. Write a balanced equation for this reaction (do not worry about the phase...

Solved • Nov 12, 2018

Stoichiometry

Q. One of the best-selling light, or low-calorie, beers is 4.4 % alcohol by volume and a 12-oz serving contains 110 Calories; remember: 1 Calorie = 10...

Solved • Oct 31, 2018

Stoichiometry

Q. You may want to reference (Pages 102 - 105)Section 3.6 while completing this problem.Sodium hydroxide reacts with carbon dioxide to form sodium car...

Solved • Oct 31, 2018

Stoichiometry

Q. Propane, C3H8, is a common fuel used for cooking and home heating. What mass of O2 is consumed in the combustion of 1.00 g of propane?

Solved • Oct 31, 2018

Stoichiometry

Q. The diagram  represents a high-temperature reaction between CH4 and H2O.Based on this reaction, find how many moles of CO can be obtained starting ...

Solved • Oct 31, 2018

Stoichiometry

Q. The diagram represents a high-temperature reaction between CH4 and H2O.Based on this reaction, how many moles of H2 can be obtained starting with 6...

Solved • Oct 31, 2018

Stoichiometry

Q. When a compound containing C, H, and O is completely combusted in air, what reactant besides the hydrocarbon is involved in the reaction?What produ...

Solved • Oct 31, 2018

Stoichiometry

Q. The decomposition of ZnCO3(s) into ZnO(s) and CO2(g) at constant pressure requires the addition of 71.5 kJ of heat per mole of ZnCO3.Write a balanc...

Solved • Oct 31, 2018

Stoichiometry

Q. Gasoline is composed primarily of hydrocarbons, including many with eight carbon atoms, called octanes. One of the cleanest-burning octanes is a co...

Solved • Oct 31, 2018

Stoichiometry

Q. Diethyl ether, C4H10O (l), a flammable compound that has long been used as a surgical anesthetic, has the structureCH3 - CH2 - O - CH2 - CH3The com...

Solved • Oct 31, 2018

Stoichiometry

Q. Burning methane in oxygen can produce three different carbon-containing products: soot (very fine particles of graphite), CO(g), and CO2(g).Write b...

Solved • Oct 31, 2018

Stoichiometry

Q. Burning methane in oxygen can produce three different carbon-containing products: soot (very fine particles of graphite), CO(g), and CO2(g).Write b...

Solved • Oct 31, 2018

Stoichiometry

Q. Burning methane in oxygen can produce three different carbon-containing products: soot (very fine particles of graphite), CO(g), and CO2(g).Write b...

Solved • Oct 31, 2018

Stoichiometry

Q. Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is approximately 310 mg HCN per kilogram of air when inhaled.If the HCN is formed by rea...

Solved • Oct 31, 2018

Stoichiometry

Q. The source of oxygen that drives the internal combustion engine in an automobile is air. Air is a mixture of gases, which are principally N2 (~79%)...

Solved • Oct 31, 2018

Stoichiometry

Q. A mixture containing KClO3, K2CO3, KHCO3, and KCl was heated, producing CO2,O2, and H2O gases according to the following equations:2KClO3 (s) →2KCl...

Solved • Oct 31, 2018

Stoichiometry

Q. A mixture containing KClO3, K2CO3, KHCO3, and KCl was heated, producing CO2,O2, and H2O gases according to the following equations:2KClO3 (s) → 2KC...

Solved • Oct 31, 2018

Stoichiometry

Q. If an automobile travels 230 mi with a gas mileage of 21.5 mi/gal , how many kilograms of CO2 are produced?Assume that the gasoline is composed of ...

Solved • Oct 31, 2018

Stoichiometry

Q. Repeat the calculation for a truck that has a gas mileage of 6 mi/gal.

Solved • Oct 31, 2018

Stoichiometry

Q. A particular coal contains 2.5% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas. The sulfur dioxide react...

Solved • Oct 31, 2018

Stoichiometry

Q. A particular coal contains 2.5% sulfur by mass. When this coal is burned, the sulfur is converted into sulfur dioxide gas. The sulfur dioxide react...

Solved • Oct 31, 2018

Stoichiometry

Q. An element X forms an iodide (XI3) and a chloride (XCl3). The iodide is quantitatively converted to the chloride when it is heated in a stream of c...

Solved • Oct 31, 2018

Stoichiometry

Q. A method used by the Environmental Protection Agency (EPA) for determining the concentration of ozone in air is to pass the air sample through a "b...

Solved • Oct 31, 2018

Stoichiometry

Q. A method used by the Environmental Protection Agency (EPA) for determining the concentration of ozone in air is to pass the air sample through a "b...

Solved • Oct 31, 2018

Stoichiometry

Q. You may want to reference (Pages 106 - 110) Section 3.7 while completing this problem.A chemical plant uses electrical energy to decompose aqueous ...

Solved • Oct 31, 2018

Stoichiometry

Q. You may want to reference (Pages 106 - 110) Section 3.7 while completing this problem.A chemical plant uses electrical energy to decompose aqueous ...

Solved • Oct 31, 2018

Stoichiometry

Q. The fat stored in the hump of a camel is a source of both energy and water.Calculate the mass of H2O produced by metabolism of 2.2 kg of fat, assum...

Solved • Oct 31, 2018

Stoichiometry

Q. A mixture of N2 (g) and H2 (g) reacts in a closed container to form ammonia, NH3 (g). The reaction ceases before either reactant has been totally c...

Solved • Oct 31, 2018

Stoichiometry

Q. A mixture containing KClO3, K2CO3, KHCO3, and KCl was heated, producing CO2,O2, and H2O gases according to the following equations:2 2KClO3 (s) →  ...

Solved • Oct 31, 2018

Stoichiometry

Q. A mixture containing KClO3, K2CO3, KHCO3, and KCl was heated, producing CO2,O2, and H2O gases according to the following equations:2 2KClO3 (s) →  ...

Solved • Oct 31, 2018

Stoichiometry

Q. If 1.5 mol C2H5OH, 1.5 mol C3H8, and 1.5 mol CH3CH2COCH3 are completely combusted in oxygen, which produces the largest number of moles of H2O? Exp...

Solved • Oct 31, 2018

Stoichiometry

Q. If 1.5 mol C2H5OH, 1.5 mol C3H8, and 1.5 mol CH3CH2COCH3 are completely combusted in oxygen, which produces the least number of moles of H2O? Explain.

Solved • Oct 31, 2018

Stoichiometry

Q. An element X forms an iodide (XI3) and a chloride (XCl3). The iodide is quantitatively converted to the chloride when it is heated in a stream of c...

Solved • Oct 31, 2018

Stoichiometry

Q. If 1.5 mol of each of the following compounds is completely combusted in oxygen, which one will produce the largest number of moles of H2O?C2H5OH, ...

Solved • Oct 31, 2018

Stoichiometry

Q. A 1.800-g sample of solid phenol (C6H5OH(s)) was burned in a bomb calorimeter, which has a total heat capacity of 11.66 kJ/oC. The temperature of t...

Solved • Oct 31, 2018

Stoichiometry

Q. You may want to reference (Pages 103 - 105)Section 3.6 while completing this problem.Detonation of nitroglycerin proceeds as follows: 4 C3H5N3O9(l)...

Solved • Oct 31, 2018

Stoichiometry

Q. You may want to reference (Pages 103 - 105)Section 3.6 while completing this problem.Detonation of nitroglycerin proceeds as follows: 4 C3H5N3O9(l)...

Solved • Oct 31, 2018

Stoichiometry

Q. You may want to reference (Pages 103 - 105)Section 3.6 while completing this problem.Detonation of nitroglycerin proceeds as follows: 4 C3H5N3O9(l)...

Solved • Oct 31, 2018