06:23Balancing Chemical Equations Step by Step Practice Problems | How to Pass ChemistryMelissa Maribel717views1rank
05:01How to Balance Chemical Equations in 5 Easy Steps: Balancing Equations TutorialWayne Breslyn1433views
Open QuestionDetermine the total sum of the coefficients after balancing the following equation.___ C2H5SH (g) + ___ O2 (g) → ___ CO2 (g) + ___ H2O (l) + ___ SO2 (g)1037views13rank5comments
Multiple ChoiceWhen the following equation is balanced, what is the coefficient in front of H2O? ___ Ba(OH)2 + ___ H3PO4 → ___ H2O + ___ Ba3(PO4)2391views
Multiple ChoiceIn the following equation what is the mole ratio of NaOH to H2O, respectively? ___NaOH (aq) + ___ H3PO4(aq) → ___ H2O(l) + ___ Na3PO4(aq)321views
Open QuestionWrite the balanced equation for the following by inserting the correct coefficients in the blanks.___ Al4C3 (s) + ___ H2O (l) → ___ Al2O3 (s) + ___ CH4 (g)703views19rank1comments
Multiple ChoiceDetermine the balanced chemical equation when ethanol, C2H6O is ignited in the presence of air.269views2comments
Textbook QuestionThe reaction of A2 (red spheres) with B2 (blue spheres) is shown in the diagram. What is the balanced chemical equa-tion? (LO 3.1) (a) 2 A2 + 6 B2 ---> 4 AB3 (b) 4 A + 12 B ---> 4 AB3 (c) 4 A + 12 B ---> A4 + B12 (d) A2 + 3 B2 ---> 2 AB3685views1rank
Textbook QuestionThe reaction between reactant A (blue spheres) and reactant B (red spheres) is shown in the following diagram: Based on this diagram, which equation best describes the reaction? (a) A2 + B¡A2B (b) A2 + 4 B¡2 AB2 (c) 2 A + B4¡2 AB2 (d) A + B2¡AB21442views
Textbook QuestionWhat are the coefficients in the balanced equation for the combustion of ethanol? (LO 3.2) (a) 1, 3, 2, 3 (b) 2, 3, 4, 3 (c) 2, 7, 4, 6 (d) 1, 4, 2, 3669views
Textbook QuestionThe following diagram shows the combination reaction between hydrogen, H2, and carbon monoxide, CO, to produce methanol, CH3OH (white spheres are H, black spheres are C, red spheres are O). The correct number of CO molecules involved in this reaction is not shown. (b) Write a balanced chemical equation for the reaction.450views
Textbook QuestionThe following diagram shows the combination reaction between hydrogen, H2, and carbon monoxide, CO, to produce methanol, CH3OH (white spheres are H, black spheres are C, red spheres are O). The correct number of CO molecules involved in this reaction is not shown. (a) Determine the number of CO molecules that should be shown in the left (reactants) box.596views
Textbook QuestionNitrogen 1N22 and hydrogen 1H22 react to form ammonia 1NH32. Consider the mixture of N2 and H2 shown in the accompanying diagram. The blue spheres represent N, and the white ones represent H. (a) Write the balanced chemical equation for the reaction.518views1rank
Textbook QuestionWrite 'true' or 'false' for each statement. (a) We balance chemical equations as we do because energy must be conserved.1127views
Textbook QuestionA key step in balancing chemical equations is correctly identifying the formulas of the reactants and products. For example, consider the reaction between calcium oxide, CaO(s), and H2O1l2 to form aqueous calcium hydroxide. (b) Is it possible to balance the equation if you incorrectly identify the product as CaOH1aq2, and if so, what is the equation?1118views
Textbook QuestionBalance the following equations: (c) Al(OH)31s2 + H2SO41l2¡Al2(SO4)3(s) + H2O(l)721views
Textbook QuestionBalance the following equations: (d) Na2CO31aq2 + HCl1aq2¡NaCl1aq2 + H2O1l2 + CO2(g)366views
Textbook QuestionBalance the following equations: (c) Ba3N21s2 + H2O1aq2¡Ba(OH)21aq2 + NH31g2464views
Textbook QuestionBalance the following equations: (c) MnO21s2 + HCl1aq2 ¡MnCl21s2 + H2O1l2 + Cl2(g)437views
Textbook QuestionBalance the following equations: (b) Cu1s2 + HNO31aq2¡Cu(NO3)21aq2 + NO21g) + H2O(l)446views
Textbook QuestionBalance the following equations: (d) KOH1aq2 + H3PO41aq2 ¡K3PO41aq2 + H2O1l2359views
Textbook QuestionWrite balanced chemical equations corresponding to each of the following descriptions: (c) When hydrogen gas is passed over solid hot iron(III) oxide, the resulting reaction produces iron and gaseous water.957views
Textbook QuestionWrite balanced chemical equations to correspond to each of the following descriptions: (d) When solid mercury(II) nitrate is heated, it decomposes to form solid mercury(II) oxide, gaseous nitrogen dioxide, and oxygen.802views
Textbook QuestionWrite balanced chemical equations to correspond to each of the following descriptions: (c) Phosphine, PH31g2, combusts in oxygen gas to form water vapor and solid tetraphosphorus decaoxide.506views
Textbook QuestionWrite balanced chemical equations to correspond to each of the following descriptions: (b) Boron sulfide, B2S31s2, reacts violently with water to form dissolved boric acid, H3BO3, and hydrogen sulfide gas.872views
Textbook Question(c) What is the sum of the coefficients in the balanced chemical equation for the combustion of one mole of acetone, C3H6O1l2, in air?1154views
Textbook QuestionWrite a balanced chemical equation for the reaction that occurs when (d) dimethylether, CH3OCH31g2, is combusted in air.1974views1rank
Textbook QuestionWrite a balanced chemical equation for the reaction that occurs when (c) the hydrocarbon styrene, C8H81l2, is combusted in air934views
Textbook QuestionWrite a balanced chemical equation for the reaction that occurs when (b) barium carbonate decomposes into barium oxide and carbon dioxide gas when heated1123views
Textbook QuestionWrite a balanced chemical equation for the reaction that occurs when (b) silver(I) oxide decomposes into silver metal and oxygen gas when heated970views
Textbook QuestionAt 900 °C, titanium tetrachloride vapor reacts with molten magnesium metal to form solid titanium metal and molten magnesium chloride. (a) Write a balanced equation for this reaction.1220views1comments
Textbook QuestionThe diagrams represent a reaction on the molecular level. Atoms of A are represented with red spheres, and atoms of B are represented with blue spheres. Write a balanced chemical equation.963views
Textbook QuestionWhich of the following equations is balanced? (a) The development reaction in silver-halide photography: 2 AgBr + 2 NaOH + C6H6O2¡2 Ag + H2O + 2 NaBr + C6H4O2 (b) The preparation of household bleach: 2 NaOH + Cl2¡NaOCl + NaCl + H2O270views
Textbook QuestionWhich of the following equations is balanced? Balance any that need it. (a) The thermite reaction, used in welding: Al + Fe2O3 --> Al2O3 + Fe538views
Textbook QuestionFind the limiting reactant for each initial amount of reactants. 4 Al(s) + 3 O2( g)¡2 Al2O3(s) a. 1 mol Al, 1 mol O2 b. 4 mol Al, 2.6 mol O2 c. 16 mol Al, 13 mol O2 d. 7.4 mol Al, 6.5 mol O23002views1comments
Textbook QuestionBalance the following equations. (c) The burning of rocket fuel: C2H8N2 + N2O4 --> N2 + CO2 + H2O1986views
Textbook QuestionBalance the following equations. (b) The spoilage of wine into vinegar: C2H6O + O2 --> C2H4O2 + H2O1062views
Textbook QuestionBalance the following equations. (a) The explosion of ammonium nitrate: NH4NO3 --> N2 + O2 + H2O1308views1rank
Textbook QuestionThe following reaction is exothermic: (a) Write a balanced equation for the reaction (red spheres represent A atoms and ivory spheres represent B atoms)571views
Textbook QuestionBalance the following equations. (c) NH4ClO4 + Al --> Al2O3 + N2 + Cl2 + H2O862views
Textbook QuestionBalance the following equations. (b) Au + H2SeO4 --> Au2(SeO4)3 + H2SeO3 + H2O676views
Textbook QuestionThe following reaction of A3 molecules is spontaneous. (a) Write a balanced equation for the reaction.369views
Textbook QuestionBalance the following equations. (a) CO(NH2)2(aq) + HOCl(aq) --> NCl3(aq) + CO2(aq) + H2O(l)765views
Textbook QuestionBalance the following equations. (b) Ca3(PO4)2(s) + SiO2(s) + C(s) --> P4(g) + CaSiO3(l) + CO(g)1162views
Textbook QuestionThe following pictures represent the initial state and the equilibrium state for the reaction of A2 molecules (red) with B atoms (blue) to give AB molecules. (a) Write a balanced chemical equation for the reaction.504views
Textbook QuestionThe following pictures represent equilibrium mixtures at 325 K and 350 K for a reaction involving A atoms (red), B atoms (blue), and AB molecules. (a) Write a balanced equation for the reaction that occurs on raising the temperature.361views
Textbook QuestionThe following pictures represent the initial and equilibrium states for the exothermic decomposition of gaseous A mol- ecules (red) to give gaseous B molecules (blue). (a) Write a balanced chemical equation for the reaction.677views
Textbook QuestionThe following pictures represent the initial and equilibrium states for the exothermic reaction of solid A (red) with gas- eous B2 (blue) to give gaseous AB. (a) Write a balanced chemical equation for the reaction.342views
Textbook QuestionA 1.50-g sample of quinone 1C6H4O22 is burned in a bomb calorimeter whose total heat capacity is 8.500 kJ>°C. The temperature of the calorimeter increases from 25.00 to 29.49°C. (a) Write a balanced chemical equation for the bomb calorimeter reaction.345views
Textbook QuestionA 2.20-g sample of phenol 1C6H5OH2 was burned in a bomb calorimeter whose total heat capacity is 11.90 kJ>°C. The temperature of the calorimeter plus contents increased from 21.50 to 27.50 °C. (a) Write a balanced chemical equation for the bomb calorimeter reaction.701views
Textbook QuestionChlorine reacts with oxygen to form Cl2O7. (b) Write a balanced equation for the formation of Cl2O71l2 from the elements.1571views
Textbook QuestionMagnesium metal burns in oxygen to form magnesium oxide, MgO. (a) Write a balanced equation for the reaction.1486views
Textbook QuestionCalcium hydride reacts with water to form calcium hydroxide and hydrogen gas. (a) Write a balanced chemical equation for the reaction.1506views
Textbook QuestionConsider the mixture of propane, C3H8, and O2 shown here. (a) Write a balanced equation for the combustion reaction that occurs between propane and oxygen.619views
Textbook QuestionDiethyl ether, C4H10O1l2, a flammable compound that was once used as a surgical anesthetic, has the structure The complete combustion of 1 mol of C4H10O1l2 to CO21g2 and H2O1l2 yields H° = -2723.7 kJ. (a) Write a balanced equation for the combustion of 1 mol of C4H10O1l2.904views
Textbook QuestionThe reaction of tungsten hexachloride (WCl6) with bismuth gives hexatungsten dodecachloride (W6Cl12). WCl6 + Bi ---> W6Cl12 + BiCl3 Unbalanced (a) Balance the equation.759views
Textbook QuestionWrite balanced chemical equations for (a) the complete combustion of acetone (CH3COCH3), a common organic solvent1067views
Textbook QuestionWrite the balanced chemical equation for the reaction of solid lithium with liquid water.853views
Textbook QuestionWrite a balanced equation for the synthesis of the 2–6 semiconductor ZnTe by chemical vapor deposition from dimethylzinc, Zn1CH322, and diethyltellurium, Te1CH2CH322, assuming that the other product is gaseous propane 1CH3CH2CH32.509views
Textbook QuestionDuring photosynthesis, plants use energy from sunlight to form glucose (C6H12O6) and oxygen from carbon dioxide and water. Write a balanced equation for photosynthesis.2168views
Textbook QuestionThe ionic substance strontium oxide, SrO, forms from the reaction of strontium metal with molecular oxygen. The arrangement of the ions in solid SrO is analogous to that in solid NaCl: (a) Write a balanced equation for the formation of SrO(s) from its elements.1025views
Textbook QuestionThe fluoride ion reacts with water to produce HF. (a) Write out the chemical equation for this reaction.1311views
Textbook QuestionSulfuric acid is a component of acid rain formed when gaseous sulfur dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous sulfuric acid. Write the balanced chemical equation this reaction. (Note: this is a simplified representation of this reaction.)1772views
Textbook QuestionNitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid. Write the balanced chemical equation for this reaction. (Note: this is a simplified representation of this reaction.)1685views
Textbook QuestionWhen iron rusts, solid iron reacts with gaseous oxygen to form solid iron(III) oxide. Write the balanced chemical equation for this reaction.1856views
Textbook QuestionWrite the balanced chemical equation for the fermentation of sucrose (C12H22O11) by yeasts in which the aqueous sugar reacts with water to form aqueous ethanol (C2H5OH) and carbon dioxide gas.1380views
Textbook QuestionWrite the balanced chemical equation for each reaction. c. Aqueous hydrochloric acid reacts with solid manganese(IV) oxide to form aqueous manganese(II) chloride, liquid water, and chlorine gas.1438views
Textbook QuestionWrite the balanced chemical equation for each reaction. a. Solid lead(II) sulfide reacts with aqueous hydrobromic acid to form solid lead(II) bromide and dihydrogen monosulfide gas.1463views1rank
Textbook QuestionWrite the balanced chemical equation for each reaction. d. Liquid pentane (C5H12) reacts with gaseous oxygen to form carbon dioxide and liquid water.1412views1rank
Textbook QuestionWrite the balanced chemical equation for each reaction. b. Gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (CH4) and liquid water.1631views
Textbook QuestionWrite the balanced chemical equation for each reaction. d. Gaseous ammonia (NH3) reacts with gaseous oxygen to form gaseous nitrogen monoxide and gaseous water.1336views
Textbook QuestionWrite the balanced chemical equation for each reaction. a. Solid copper reacts with solid sulfur to form solid copper(I) sulfide.2029views
Textbook QuestionWrite the balanced chemical equation for each reaction. b. Solid iron(III) oxide reacts with hydrogen gas to form solid iron and liquid water.4022views1comments
Textbook QuestionBalance each chemical equation. b. Co(NO3)3(aq) + (NH4)2S(aq)¡Co2S3(s) + NH4NO3(aq)1390views
Textbook QuestionPredict the products and write a balanced molecular equation for each reaction. If no reaction occurs, write 'NO REACTION.' c. liquid pentanol (C5H12O) and gaseous oxygen930views
Textbook QuestionSulfur tetrafluoride 1SF42 reacts slowly with O2 to form sulfur tetrafluoride monoxide 1OSF42 according to the following unbalanced reaction: SF41g2 + O21g2¡OSF41g2 The O atom and the four F atoms in OSF4 are bonded to a central S atom. (a) Balance the equation.903views
Textbook QuestionOne of the most bizarre reactions in chemistry is called the Ugi reaction: R1C(=O)R2 + R3 - NH2 + R4COOH + R5NC S R4C(=O)N(R3)C(R1R2)C=ONHR5 + H2O (a) Write out the balanced chemical equation for the Ugi reaction, for the case where R = CH3CH2CH2CH2CH2CH2— (this is called the hexyl group) for all compounds.511views
Textbook QuestionIsooctane, C8H18, is the component of gasoline from which the term octane rating derives. (a) Write a balanced equation for the combustion of isooctane(l) with O2 to yield CO2(g) and H2O(l)1377views
Textbook QuestionWhen solid mercury(I) carbonate, Hg2CO3, is added to nitric acid, HNO3, a reaction occurs to give mercury(II) nitrate, Hg1NO322, water, and two gases A and B: Hg2CO31s2 + HNO31aq2¡ Hg1NO3221aq2 + H2O1l 2 + A1g2 + B1g2 (e) Write a balanced equation for the reaction of mercury(I) carbonate with nitric acid.1252views
Textbook QuestionWhen 10.0 g of a mixture of Ca1ClO322 and Ca1ClO22 is heated to 700 °C in a 10.0-L vessel, both compounds decompose, forming O21g2 and CaCl21s2. The final pressure inside the vessel is 1.00 atm. (a) Write balanced equations for the decomposition reactions.325views
Textbook QuestionWhen a gaseous compound X containing only C, H, and O is burned in O2, 1 volume of the unknown gas reacts with 3 volumes of O2 to give 2 volumes of CO2 and 3 volumes of gaseous H2O. Assume all volumes are measured at the same temperature and pressure. (a) Calculate a formula for the unknown gas, and write a balanced equation for the combustion reaction.786views
Textbook QuestionIsooctane, C8H18, is the component of gasoline from which the term octane rating derives. (a) Write a balanced equation for the combustion of isooctane to yield CO2 and H2O.514views
Textbook QuestionChemical explosions are characterized by the instantaneous release of large quantities of hot gases, which set up a shock wave of enormous pressure (up to 700,000 atm) and velocity (up to 20,000 mi/h). For example, explosion of nitroglycerin 1C3H5N3O92 releases four gases, A, B, C, and D: n C3H5N3O91l2¡a A1g2 + b B1g2 + c C1g2 + d D1g2 Assume that the explosion of 1 mol (227 g) of nitroglycerin releases gases with a temperature of 1950 °C and a volume of 1323 L at 1.00 atm pressure. (e) Write a balanced equation for the explosion of nitroglycerin.907views
Textbook QuestionCombustion analysis of 0.1500 g of methyl tert-butyl ether, an octane booster used in gasoline, gave 0.3744 g of CO2 and 0.1838 g of H2O. When a flask having a volume of 1.00 L was evacuated and then filled with methyl tertbutyl ether vapor at a pressure of 100.0 kPa and a temperature of 54.8 °C, the mass of the flask increased by 3.233 g. (c) Write a balanced equation for the combustion reaction.303views
Textbook QuestionElement M is prepared industrially by a two-step procedure according to the following (unbalanced) equations: Assume that 0.855 g of M2O3 is submitted to the reaction sequence. When the HCl produced in step (2) is dissolved in water and titrated with 0.511 M NaOH, 144.2 mL of the NaOH solution is required to neutralize the HCl. (a) Balance both equations.452views
Textbook QuestionAcid spills are often neutralized with sodium carbonate or sodium hydrogen carbonate. For neutralization of acetic acid, the unbalanced equations are 112 CH3CO2H1l2 + Na2CO31s2 S CH3CO2Na1aq2 + CO21g2 + H2O1l2 122 CH3CO2H1l2 + NaHCO31s2 CH3CO2Na1aq2 + CO21g2 + H2O1l2 (a) Balance both equations.684views
Open QuestionFor each molecule of C4H8 that reacts, how many molecules of carbon dioxide and water are produced?198views
Open QuestionFor the following balanced equation, which has the highest coefficient? 4 H2 + 2 C → 2 CH4195views
Open QuestionWrite a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate.163views
Open QuestionEnter a balanced chemical equation for the reaction of solid potassium with liquid water.173views
Open QuestionWhen aluminum, Al, metal is dipped in an aqueous solution of hydrochloric acid, HCl, hydrogen gas, H2, is produced with the formation of an aluminum chloride, AlCl3, solution. Write the balanced chemical equation showing the phases of reactants and products.220views
Open QuestionWrite a balanced chemical equation based on the following description: nitrogen gas and oxygen gas react to produce nitrogen monoxide gas175views
Open QuestionThe figure (figure 1) shows the reaction of element a (lavender spheres) with element b (tan spheres). write the balanced chemical equation for this reaction in terms of a and b.285views
Open QuestionWhat is the coefficient in front of the no when the equation below is balanced? NH3(g) + O2(g) → NO(g) + H2O(g)216views
Open QuestionWrite a balanced chemical equation based on the following description: propanol, C3H7OH(l) burns in air to produce gaseous carbon dioxide and water vapor179views
Open QuestionWrite a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor.175views
Open QuestionSolid iron(iii) oxide reacts with hydrogen gas to form solid iron and liquid water.326views
Open QuestionWhen iron rusts, solid iron reacts with gaseous oxygen to form solid iron(iii) oxide.272views
Open QuestionLiquid octane reacts with oxygen gas to form carbon dioxide gas and water vapor.260views
Open QuestionGaseous carbon monoxide reacts with hydrogen gas to form gaseous methane (ch4) and liquid water.652views
Open QuestionSolid aluminum sulfide reacts with water to form solid aluminum hydroxide and gaseous hydrogen sulfide.495views
Open QuestionHow many moles of o2 are in the chemical equation when balanced using the lowest whole numbers?285views
Open QuestionWhich coefficient of O2 is needed to balance the equation C3H8 + O2 → 3 CO2 + 4 H2O?180views
Open QuestionWhich are the products in the equation CH3SH + 4 O2 → CO2 + SO2 + 2 H2O? Check all that apply.199views
Open QuestionBased on your experience in the simulation, what do the numbers 3 and 4 refer to in 3 NH4?176views
Open QuestionThe equilibrium system between hydrogen gas, bromine gas, and hydrogen bromide gas is given.148views
Open QuestionWhen H2SO4 is neutralized by NaOH in aqueous solution, the net ionic equation is ________.152views
Open QuestionWrite a balanced ionic equation for this acid-base reaction: Ca(OH)2(aq) + 2 CH3CO2H(aq) →191views
Open QuestionHow does a balanced chemical equation show that mass is never lost or gained in a chemical reaction?190views
Open QuestionHow do you use the coefficient to calculate the number of atoms in each molecule169views
Open QuestionWhich of the following balanced equations correctly represents the dissociation of K2SO4 in water?171views
Open QuestionHow does a chemical equation show that matter is always conserved in a chemical reaction?154views