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Stoichiometry Solutions Library

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461 solutions

Stoichiometry

Q. Calculate the mass of hydrogen from the reaction of 2.70 g of aluminum metal and hydrochloric acid. Al (s) + HCl (aq) → AlCl3 (aq) + H2 (g) (a) 0.6...

Solved • Aug 22, 2018

Stoichiometry

Q. According to the following reaction, how many moles of ammonium nitrate are necessary to form 0.888 moles water? ammonium nitrate (aq) → dinitrogen...

Solved • Aug 14, 2018

Stoichiometry

Q. Potassium metal (K) reacts violently when added to water according to the balanced equation: 2K(s) + 2 H2O(l) → 2 KOH(aq) + H2(g). How many moles o...

Solved • Aug 14, 2018

Stoichiometry

Q. When 123.8 g of ethylene (C2H4) burns in oxygen to give carbon dioxide and water, how many grams of CO2 are formed? a. 388.5 gb. 4.41 g c. 97.1 g d...

Solved • Aug 13, 2018

Stoichiometry

Q. How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 65.1 moles of water vapor?

Solved • Aug 13, 2018

Stoichiometry

Q. Part AHow many moles of methane are produced when 36.6 moles of carbon dioxide gas read with excess hydrogen gas? Express your answer with the appr...

Solved • Jul 31, 2018

Stoichiometry

Q. Part CHow many grams of H2 are needed to produce 14.58 g of NH3? Express your answer numerically in grams. Part DHow many molecules (not moles) of ...

Solved • Jul 31, 2018

Stoichiometry

Q. Part AHow many moles of NH3 can be produced from 15.0 mol of H2 and excess N2? Express your answer numerically in moles. Part BHow many grams of NH...

Solved • Jul 31, 2018

Stoichiometry

Q. Ammonia (NH3) chemically reacts with oxygen gas (O2) to produce nitric oxide (NO) and water (H2O). What mass of nitric oxide is produced by the rea...

Solved • Jul 31, 2018

Stoichiometry

Q. A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to produce carbon dioxide ...

Solved • Jul 31, 2018

Stoichiometry

Q. Balance the following reaction. Pb(NO3)3 + KI → KNO3 +PbI2Based on the balanced chemical equation above, determine the moles of KI needed to produc...

Solved • Jul 25, 2018

Stoichiometry

Q. 7.65 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following reaction? C5H12 + 8O2 → 6H2O + 5CO2

Solved • Jul 24, 2018

Stoichiometry

Q. Under certain circumstances, carbon dioxide, CO2 (g) can be made to react with hydrogen gas, H2 (g) to produce methane, CH4 (g) and water vapour H2...

Solved • Jul 24, 2018

Stoichiometry

Q. Hydrazine, N2H4, a substance used as rocket fuel, reacts with oxygen as follows:N2H4 (l) + O2 (g) → NO2 (g) + H2O (g) Part ABalance the equation. E...

Solved • Jul 24, 2018

Stoichiometry

Q. The combustion of propane may be described by the chemical equation, C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g) How many grams of O2(g) are needed to...

Solved • Jul 24, 2018

Stoichiometry

Q. Here is the combustion reaction for octane (C8H18), which is a primary component of gasoline. 2C8H18 + 25O2 → 16CO2 + 18H2O How many moles of CO2 a...

Solved • Jul 24, 2018

Stoichiometry

Q. If 8.95 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? 

Solved • Jul 24, 2018

Stoichiometry

Q. The combustion of ethane (C2H6) produces carbon dioxide and steam:2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(g)How many moles of CO2 are produced when 5.65...

Solved • Jul 16, 2018

Stoichiometry

Q. If 0,356 moles of zinc reacts with excess lead(V) sulfate, how many grams of zinc sulfate would be produced in the following reaction? Pb(SO4)2 + 2...

Solved • Jul 16, 2018

Stoichiometry

Q. Chromium metal can be produced from the high temperature reaction of Cr 2O3 [chromium(III) oxide] with silicon or aluminum by each of the following...

Solved • Jul 11, 2018

Stoichiometry

Q. The manufacture of aluminum includes the production of cryolite (Na3AlF6) from the following reaction: 6HF + 3NaAlO2 → Na3AlF6 + 3H2O + Al2O3. How ...

Solved • Jul 11, 2018

Stoichiometry

Q. A) The reaction between iron (ll) oxide and carbon monoxide produces iron and carbon dioxide. How many moles of iron can be obtained when 1.25 mol ...

Solved • Jul 10, 2018

Stoichiometry

Q. The combustion of ethane (C2H6) produces carbon dioxide and steam: 2C2H6 (g) + 7O2 (g) → 4CO2 (g) + 6H2O (g)How many moles of CO2 are produced when...

Solved • Jul 10, 2018

Stoichiometry

Q. If 5.93 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12 + 8O2 → 6H2O + 5CO2

Solved • Jul 10, 2018

Stoichiometry

Q. When barium chloride reacts with potassium sulfate, barium sulfate and potassium chloride are produced. The balanced equation for this reaction is:...

Solved • Jul 10, 2018

Stoichiometry

Q. When hydrogen sulfide reacts with oxygen, water and sulfur dioxide are produced. The balanced equation for this reaction is: 2H2S (g) + 3O2 (g) → 2...

Solved • Jul 10, 2018

Stoichiometry

Q. According to the following reaction, how many grams of sulfuric acid are necessary to form 0.309 moles aluminum sulfate? aluminum oxide (s) + sulfu...

Solved • Jul 10, 2018

Stoichiometry

Q. According to the following reaction, how many moles of sodium hydroxide will be formed upon the complete reaction of 29.6 grams of sodium with exce...

Solved • Jul 10, 2018

Stoichiometry

Q. To find the answer to the problem below, complete the set up by filling in the correct numbers (units in set are already provided):How many moles o...

Solved • Jul 10, 2018

Stoichiometry

Q. According to the following reaction, how many moles of water are necessary to form 0.445 moles zinc hydroxide? zinc oxide (s) + water (1) → zinc hy...

Solved • Jul 10, 2018

Stoichiometry

Q. According to the following reaction, how many moles of hydrogen iodide will be formed upon the complete reaction of 0.283 moles hydrogen gas with e...

Solved • Jul 10, 2018

Stoichiometry

Q. When heated, KClO3 decomposes into KCI and O2. 2KClO3 → 2KCI + 3O2 If this reaction produced 45.8 g of KCl, how much O 2  was produced (in grams)  

Solved • Jul 10, 2018

Stoichiometry

Q. The combustion of octane (C8H18) is represented by the following equation: 2C 8H18 + 25O2 → 16CO2 + 18H2O How many grams of carbon dioxide (CO2) ar...

Solved • Jul 10, 2018

Stoichiometry

Q. When silver nitrate reacts with copper(II) chloride, silver chloride and copper(II) nitrate are produced. The balanced equation for this reaction i...

Solved • Jul 9, 2018

Stoichiometry

Q. When sulfuric acid reacts with calcium hydroxide, calcium sulfate and water are produced. The balanced equation for this reaction is: H2SO4 (aq) + ...

Solved • Jul 9, 2018

Stoichiometry

Q. When hydrochloric acid reacts with iron(III) oxide, water and iron(III) chloride are produced. The balanced equation for this reaction is: 6HCl (aq...

Solved • Jul 9, 2018

Stoichiometry

Q. The combustion of octane (C8H18) is represented by the following equation: 2C8H18 + 25O2 → 16CO2 + 18H2O How many grams of carbon dioxide (CO2) are...

Solved • Jul 9, 2018

Stoichiometry

Q. Part CHow many grams of H2 are needed to produce 10.16 g of NH 3? Express your answer numerically in grams. Part DHow many molecules (not moles) of...

Solved • Jul 3, 2018

Stoichiometry

Q. Be sure to answer all parts.Potassium nitrate decomposes on heating, producing potassium oxide and gaseous nitrogen and oxygen: 4KNO3 (s) → 2K2O (s...

Solved • Jul 3, 2018

Stoichiometry

Q. Enter your answer in the provided box.Use the balanced equation to answer the question. 2C2H6 (g) + 5O2 (g) → 4CO (g) + 6H2O (g) How many moles of ...

Solved • Jul 3, 2018

Stoichiometry

Q. Use the balanced equation for the reaction of N 2 and O2 to form NO to answer the question. N2 (g) + O2 (g) → 2NO (g) How many moles of NO are form...

Solved • Jul 3, 2018

Stoichiometry

Q. The uranium minerals found in nature must be refined and enriched in  235U before the uranium can be used as a fuel in nuclear reactors. One proced...

Solved • Jul 3, 2018

Stoichiometry

Q. Butane gas is compressed and used as a liquid fuel in disposable cigarette lighters and lightweight camping stoves. Suppose a lighter contains 5.82...

Solved • Jun 26, 2018

Stoichiometry

Q. Pb(OH)Cl, one of the lead compounds used in ancient Egyptian cosmetics, was prepared from PbO according to the following ancient recipe: PbO + NaCl...

Solved • Jun 26, 2018

Stoichiometry

Q. The manufacture of aluminum includes the production of cryolite (Na3AlF6) from the following reaction: 6 HF + 3 NaAlO2 → Na3AlF6 + 3 H2O + Al2O3 Ho...

Solved • Jun 26, 2018

Stoichiometry

Q. Calculate the number of moles of aluminum and silicon required to produce 143 g of chromium based on the following equations: Cr2O3 + 2 Al → 2 Cr +...

Solved • Jun 26, 2018

Stoichiometry

Q.  If 0.376 moles of zinc reacts with excess lead(v) sulfate, how many grams of zinc sulfate would b produced in the following reaction? 

Solved • Jun 26, 2018

Stoichiometry

Q. In the reaction of aluminum metal and oxygen to make aluminum oxide, how many grams of oxygen gas will react with 2.2 moles aluminum metal?a. 94b. ...

Solved • Jun 26, 2018

Stoichiometry

Q. Aluminum and oxygen react according to the following equation: 4Al(s) + 3O 2(g) → 2Al2O3(s) What mass of Al2O3, in grams, can be made by reacting 4...

Solved • Jun 26, 2018

Stoichiometry

Q. How many moles of H2O(g) are produced when 4.3 grams O2(g) are consumed? C4H6(g) + O2(g) → CO2(g) + H2O(g) (not balanced)a. 75 b. 0.073c. 0.25d. 0....

Solved • Jun 26, 2018

Stoichiometry

Q. When 1.0 mol of Fe reacts with Cl2 forming FeCl3, how many moles of Cl2 are required to react with all of the iron?a. none of theseb. 0.7 molc. 0.3...

Solved • Jun 26, 2018

Stoichiometry

Q. Ammonium phosphate ((NH4)3PO4) is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid (H3PO4) with ammonia (NH3...

Solved • Jun 25, 2018

Stoichiometry

Q. If 7.65 moles of C5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12 + 8O2 → 6H2O + 5CO2

Solved • Jun 25, 2018

Stoichiometry

Q. Dietary iron forms a 1: 1 complex with hemoglobin (Hb), which is responsible for O 2 transport in the body based on the following equation: Hb + 4O...

Solved • Jun 19, 2018

Stoichiometry

Q. Iron (III) oxide reacts with aluminum metal powder to make aluminum oxide and iron metal (and a whole lotta heat!). Use the balanced chemical equat...

Solved • Jun 19, 2018

Stoichiometry

Q. If 0.184 mole of I2 reacts with K according to the equation 2 K + I 2 → 2 KI, how many moles of KI will form? Select one:a. 0.184 moleb. 0.0920 mol...

Solved • Jun 18, 2018

Stoichiometry

Q. In the reaction below, how many grams of calcium carbonate are required to produce 30.50 g of carbon dioxide?

Solved • Jun 8, 2018

Stoichiometry

Q. If 4.84 moles of C 5H12 reacts with excess O2, how many moles of CO2 will be produced in the following combustion reaction? C5H12 + 8O2 → 6H2O + 5CO2

Solved • Jun 6, 2018

Stoichiometry

Q. Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water (H2O) and carbon dioxide (CO2) ch...

Solved • Jun 6, 2018

Stoichiometry

Q. The combustion of propane may be described by the chemical equation, C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g) How many grams of O 2(g) are needed to co...

Solved • Jun 6, 2018

Stoichiometry

Q. Gaseous hydrogen and oxygen can be prepared in the laboratory from the decomposition of gaseous water. The equation for the reaction is 2H2O (g) → ...

Solved • Jun 5, 2018

Stoichiometry

Q. a. How much aluminum is produced from 4.90 x 10 3 kg of AI2O3? b. The oxygen produced in part (a) is allowed to react with carbon to produce carbon...

Solved • May 31, 2018

Stoichiometry

Q. Enter your answer in the provided box.How many grams of phosphine (PH 3) can form when 23.8 g of phosphorus and 88.2 L of hydrogen gas react at STP...

Solved • May 30, 2018

Stoichiometry

Q. Be sure to answer all parts.How many grams of chloride gas can be produced from the electrolyte decomposition of 185 g of calcium chloride? Select ...

Solved • May 30, 2018

Stoichiometry

Q. How many grams of hydrogen peroxide would you need to get 24.7 g of water? Express your answer with the appropriate units. How many grams of hydrog...

Solved • May 30, 2018

Stoichiometry

Q. Given the following balanced chemical reaction equation calculate the number of moles of Ca3(PO4)2 that can be made from 263. g of Ca(OH)2 and an u...

Solved • May 29, 2018

Stoichiometry

Q. When NaHCO3 is heated above 270°C, it decomposes to Na 2CO3, H2O, and CO2. Write a balanced chemical equation for the decomposition reaction. Do no...

Solved • May 27, 2018

Stoichiometry

Q. In the following reaction, how many grams of sodium chromate, Na2CrO4, will be needed to react with 36.1 g of silver nitrate, AgNO3?2 AgNO3 + Na2Cr...

Solved • May 25, 2018

Stoichiometry

Q. For many years the extraction of gold-that is, the separation of gold from other materials-involved the use of potassium cyanide:4Au + 8KCN + O2 + ...

Solved • May 21, 2018

Stoichiometry

Q. How many grams of oxygen gas must react to give 2.10 g of ZnO?2 Zn(s) + O2(g) → 2 ZnO(s)Express your answer with the appropriate units.

Solved • May 21, 2018

Stoichiometry

Q. For the reaction N2 + 3H2 → 2NH3, how many moles of nitrogen are required to produce 14.94 mol of ammonia? a. 7.5 b. 30 c. 5.0 d. 45

Solved • May 8, 2018

Stoichiometry

Q. For the reaction Cl2 + 2KBr → 2KCl + Br2, how many moles of potassium chloride are produced from 85.4 g of potassium bromide? Select one: a. 0.718 ...

Solved • May 7, 2018

Stoichiometry

Q. What mass of oxygen is required to react with calcium to produce 44.8 g calcium oxide? 25 6 g, 51.1 g, 0.399 g, 6.39 g, 12.8 g

Solved • May 7, 2018

Stoichiometry

Q. Ammonium perchlorate (NH4ClO4) is the solid rodent fuel used by the U.S. Space Shuttle. It reacts with itself to produce nitrogen gas (N2) chlorine...

Solved • May 4, 2018

Stoichiometry

Q. How many moles of N2 are needed to react with 7.96 mol of O2?How many moles of NO can be formed when 6.16 mol of N2 reacts?

Solved • May 1, 2018

Stoichiometry

Q. The tungsten metal used for filaments in light bulbs is made by reaction of tungsten trioxide with hydrogen: WO3 (s) + 3H2 (g) → W(s) + 3H2O(g) How...

Solved • May 1, 2018

Stoichiometry

Q. How many grams of H2 are needed to produce 11.73 g of NH 3? Express your answer numerically in grams. How many molecules (not moles) of NH3 are pro...

Solved • Apr 24, 2018

Stoichiometry

Q. Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water (H2O) and carbon dioxide (CO2) ch...

Solved • Apr 18, 2018

Stoichiometry

Q. Sulfuric acid dissolves aluminum metal according to the following reaction: 2 Al(s) + 3H2SO4 (aq) → Al2(SO4)3 (aq) + 3H2 (g)Suppose you wanted to d...

Solved • Apr 9, 2018

Stoichiometry

Q. Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution containing sodium iodide:2Nal(aq) + CI2(g) → l2(...

Solved • Apr 9, 2018

Stoichiometry

Q. BaCl2 (aq) + AgNO3 (aq) → AgCl(s) + Ba(NO 3)2 (aq)a. Write the balanced equation.b. What mass AgNO3, in grams, is required for complete reaction wi...

Solved • Apr 5, 2018

Stoichiometry

Q. Sulfuric acid dissolves aluminum metal according to the reaction:2 Al(s) + 3H2SO4(aq) ---> Al2(SO4)3(aq) + 3 H(g)Suppose you wanted to dissolve ...

Solved • Apr 3, 2018

Stoichiometry

Q. Ammonia and oxygen react to form nitrogen and water.4NH3(g) +3O2 (g) → 2N2(g) +6H2O(g)a) How many grams of N2 can be produced when 6.10 of O 2 reac...

Solved • Mar 30, 2018

Stoichiometry

Q. How many moles of NH3 can be produced from 15.0 mol of H2 and excess N2? Express your answer numerically in moles. 

Solved • Mar 22, 2018

Stoichiometry

Q. How many grams of CO are needed to react with an excess of Fe  2O3 to produce 209.7g Fe?Fe2O3(s) + 3CO(g) → 3CO2(g) + 2Fe(s) 

Solved • Mar 22, 2018

Stoichiometry

Q. Lead (II) oxide, PbO, reacts with ammonia, NH 3, as follows:3PbO + 2NH3 → 3Pb + N 2 + 3H2OHow many grams of Pb are formed when 0.105 g NH 3 react?

Solved • Mar 22, 2018

Stoichiometry

Q. Consider the following unbalanced equation for the combustion of hexane:αC6H14(g) + βO2(g) → γCO2(g) + δH2O(g)a. Balance the equation.b. Determine ...

Solved • Mar 22, 2018

Stoichiometry

Q. Propane, C3H8, is commonly used as a fuel in gas grills. It reacts with oxygen according toC3H8 + 5O2 → 3CO2 + 4H2OHow many grams of propane can be...

Solved • Mar 22, 2018

Stoichiometry

Q. Aluminum sulfide reacts with water to form aluminum hydroxide and hydrogen sulfide.a. Write a balanced equation for this reaction.b. How many grams...

Solved • Mar 21, 2018

Stoichiometry

Q. The reaction of chlorine gas with solid phosphorus produces solid phosphorus pentachloride. How many grams of PCl5 are produced from 3.5 g of Cl 2?...

Solved • Mar 21, 2018

Stoichiometry

Q. Nitroglycerine decomposes violently according to the chemical equation below. What mass of carbon dioxide gas is produced from the decomposition of...

Solved • Mar 20, 2018

Stoichiometry

Q. The reaction of coal and water at a high temperature produces a mixture of hydrogen and carbon monoxide gases. This mixture is known as synthesis g...

Solved • Mar 20, 2018

Stoichiometry

Q. When heated, KClO3 decomposes into KCl and O2.2KClO3 → 2KCl + 3O2 If this reaction produced 42.0 g of KCl, how much O 2 was produced (in grams)?

Solved • Mar 20, 2018

Stoichiometry

Q. When heated, KClO3 decomposes into KCl and O2. 2KClO3 → 2KCl + 3O2 If this reaction produced 50.6 g of KCl, how much O2 was produced (in grams)?

Solved • Mar 19, 2018

Stoichiometry

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

Solved • Mar 19, 2018

Stoichiometry

Q. Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the equation3 H2(g) + N2(g) → 2 NH3(g)Use molar masses expre...

Solved • Mar 16, 2018

Stoichiometry

Q. When heated, KClO3 decomposes into KCl and O2.2 KClO3 → 2KCl + 3O2If this reaction produced 62.1 grams of KCl, how much O2 was produced (in grams)? 

Solved • Mar 16, 2018

Stoichiometry

Q. Using the following equation for the combustion of octane, calculate the amount of moles of carbon dioxide formed from 100.0 g of octane. The molar...

Solved • Mar 13, 2018

Stoichiometry

Q. How many moles of NH3 can be produced from 18.0 mol of H 2 and excess N2?

Solved • Mar 13, 2018

Stoichiometry

Q. The combustion of ethane (C2H6) produces carbon dioxide and steam:2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l)How many moles of CO2 are produced when 5.85...

Solved • Mar 8, 2018