Problem 1E: The reaction between reactant A (blue spheres) and reactant B (red spheres) is shown in the... Problem 2E: The following diagram shows the combination reaction between hydrogen, H2,and carbon monoxide, CO,... Problem 3E:
3.3 The following diagram represents the collection of elements formed by a decomposition... Problem 4E:
3.4 The following diagram represents the collection of CO2 and H2O molecules formed by... Problem 5E: Glycine, an amino acid used by organisms to make proteins, is represented by the following molecuar... Problem 6E: The following diagram represents a high-temperature reaction between CH4 and H20. Based on this... Problem 7E:
3.7 Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider the mixture of N2 and H2... Problem 8E:
3.8 Nitrogen monoxide and oxygen react to form nitrogen dioxide. Consider the mixture of NO and O2... Problem 9E: Write "true" or "false" for each statement. a. We balance chemical equations as we do because energy... Problem 10E: A key step in balancing chemical equations is correctly identifying the formulas of the reactant... Problem 11E: Balance the following equations: a. CO(g) O2(g)CO2(g) c. CH4(g)Cl2(9)CCL)HCI(g) d... Problem 12E: Balance the following equations 3. Li(s) + N2(g) -> Li3N(s) b. TiCL4,(l) + H2O(l) -(TiO2(g) +... Problem 13E:
3.13 Balance the following equations:
A14C3(s) + H2O(l) —> A1(OH)3 (s) + CH4 (g)
C5H10O2(l) + O2(g)... Problem 14E:
3.14 Balance the following equations:
a. Ca3P2(s) +H2O(1) → Ca(OH)2(aq) PH3(g)
b Al(OH)3(s) +... Problem 15E:
3.15 Write balanced chemical equations corresponding to each of the following descriptions
a.... Problem 16E Problem 17E Problem 18E:
318
a. When a compound containing C, H, and O is completely combusted in air, what reactant besides... Problem 19E: Write a balanced chemical equation for the reaction that occurs when a. Mg(s) reacts with C12(g) b.... Problem 20E:
3.20 Write a balanced chemical equation for the reaction that occurs when
a. titanium metal reacts... Problem 21E: Balance the following equations and indicate whether they are combination, decomposition, or... Problem 22E: Balance the following equations and indicate whether they are combination, decomposition, or... Problem 23E: Determine the formula weights of each of the following compounds: 3. nitric acid, HNO3; b. MO“ 0.... Problem 24E: 3.24 Determine the formula weights of each of the following compounds:
a. nitrous oxide, N20, known... Problem 25E: Calculate the percentage by mass of oxygen in the following compounds: 3. morphine, Cl7H19No3; b.... Problem 26E: Calculate the percentage by mass of the indicated element in the followung compounds: a. carbon in... Problem 27E: Based on the following structural formulas, calculate the percentage of carbon by mass present in... Problem 28E: Calculate the percentage of carbon by mass In each of the compounds represented by the following... Problem 29E: Write "true' or 'Yalse' for each statement a- A mole of horses contain a mole of horse legs- b. A... Problem 30E: a. What is the mass, in grams, of one mole of 12C? b. How many carbon atoms are present in one mole... Problem 31E: Without doing any detailed calculations (but using a periodic table to give atomic weights), rank... Problem 32E: Without doing any detailed calculations {but using a periodic table to give atomic weights), rank... Problem 33E: What is the mass, m Iqlograms, of an Avogadro“s number of people, If the average mass of a person is... Problem 34E: If Avogadro’s number of pennies is divided equally among the 321 million men, women, and children in... Problem 35E: Calculate the following quantities: a. mass, in grams, of 0.105 mol sucrose (C12H22O11) b. moles of... Problem 36E: Calculate the following quantities: a. mass, in grams, of 1.50 x 10- 2 mol CdS b. number of moles of... Problem 37E: a. What is the mass, in grams, of 2.50 x 10-3 mol of ammonium phosphate? b. How many moles of... Problem 38E: a. What is the mass, in grams, of 1.223 mol of iron(lll) sulfate? b. How many moles of ammonium ions... Problem 39E:
339 The molecular formula of allicin, the compound responsible for the characteristic smell of... Problem 40E:
3.40 The molecular formula of aspartame, the artificial sweetener marketed as NutraSweet®, is... Problem 41E:
3.41 A sample of glucose, C6H12O6, contains 1.250 x 1021 carbon atoms-
a. How many atoms of... Problem 42E: A sample of the male sex hormone testosterone, C19H28O2, contains 3.88 x 1021 hydrogen atoms a. How... Problem 43E:
343 The allowable concentration level of vinyl chloride, C2H3Cl, in the atmosphere in a chemical... Problem 44E: At least 25 g oftetrahydrocannabinol (THC), the active ingredient m marijuana, IS required to... Problem 45E: Give the empirical formula of each of the following compounds if a sample contains a. 0-0130 mol (3,... Problem 46E: Determine the empirical formula of each of the following compounds if a sample contains 3. 0-104 mol... Problem 47E: Determine the empirical formulas of the compounds with the following compositions by mass 3. 10.4%... Problem 48E: Determine the empirical formulas of the compounds with the following compositions by mass. 3. 55,395... Problem 49E:
3.49 A compound whose empirical formula is XF3 consists of 65% F by mass. What is the atomic mass... Problem 50E: The compound XCL4contains 75.0% CI by mass What is the element X? Problem 51E:
3.51 What is the molecular formula of each of the following compounds?
3. Empirical formula CH2,... Problem 52E: What is the molecular formula of each of the following compounds? a. empirical formula HCO2, molar... Problem 53E: Determine the empirical and molecular formulas of each of the following substances: a. Styrene, a... Problem 54E: Determine the empirical and molecular formulas of each of the following substances: a. Ibuprofen, a... Problem 55E: a. Combustion analysis of toluene, a common organic solvent, gives 5.86 mg of 002 and 1.37 mg of... Problem 56E: a. The characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon,... Problem 57E:
3.57 Valproic acid, used to treat seizures and bipolar disorder; is composed of C, H, and Q A... Problem 58E: Propenoic acid, C3H4O2, is a reactive organic liquid that is used in the manufacturing of plastics,... Problem 59E:
3.59 Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which... Problem 60E:
3.60 Epsom salts, a strong laxative used in veterinary medicine, is a hydrate, which means that a... Problem 61E: f 3461 Hydrofluoric acid, HF(aq), cannot be stored in glass bottles because compounds called... Problem 62E: The reaction between potassium superoxide, KO2, and CO2, 4 KO2 + 2 CO2? 2K2CO3 + 3 02 is used as a... Problem 63E:
3,63 Several brands of antacids use Al(OH)3 to react with stomach acid, which contains primarily... Problem 64E:
3.64 An iron ore sample contains Fe2O3 together with other substances. Reaction of the ore with CO... Problem 65E: Aluminum sulfides reacts with water to form aluminum hydroxide and hydrogen sulfide. a. Write the... Problem 66E: Calcium hydride reacts with water to form calcium hydroxide and hydrogen gas. a. Write a balanced... Problem 67E:
3.67 Automotive air bags infilate when sodium azide, NaN3 rapidly decomposes to its component... Problem 68E: The complete combustion of octane, Cngs, a component of gasoline, proceeds as follows: 2 C8H18(l)+... Problem 69E:
3.69 A piece of aluminum foil 1.00 cm2 and 0.550-mm thick is allowed to react with bromine to form... Problem 70E: Detonation of nitroglycerin proceeds as follows: a. If a sample containing 2.00 mL of nitroglycerin... Problem 71E:
3.71 The combustion of one mole of liquid ethanol, CH3CH2OH, produces 1367 KJ of heat.
Calculate... Problem 72E: The combustion of one mole of liquid octane, CH3(CH2)6CH3 produces 5470 U of heat Calculate how much... Problem 73E: a. Define the terms limiting reactant and excess reactant b. Why are the amounts of products formed... Problem 74E: Define the terms theoretical yield, actual yield, and percent yield b. Why is the actual yield in a... Problem 75E:
3-75 Consider the mixture of ethanol, C2H5OH, and O2 shown in the accompanying diagram.
a Write a... Problem 76E: Consider the mixture of propane, C3H8, and O2 shown here. Write a balanced equation for the... Problem 77E:
3-77 Sodium hydroxide reacts with carbon doxidc as follows:
2 NaOH(s) + CO2(g) ... Problem 78E:
3.78 Aluminum hydroxide reacts with sulfuric acid as follows:
2 Al (OH)3(s)... Problem 79E: The fizz produced when an Alka-Seltzer tablet is dissolved in water is due to the reaction between... Problem 80E: One of the steps in the commercial procas for converting ammonia to nitric acid is the conversion of... Problem 81E: Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution... Problem 82E: Solutions of sulfuric acid and Iead (ll) acetate react to form solid lead(ll) sulfate and a solution... Problem 83E: When benzene (C6H6) reacts with bromine (Br2), bromobenzene (C6H5Br) is obtained: C6H5 + br2 C6H5Br... Problem 84E: When ethane (C6H6) reacts with chlorine (Cl2), the main product is C2H5Cl, but other products... Problem 85E:
3.85 Hydrogen sulfide is an impurity in natural gas that must be removed. One common removal method... Problem 86AE:
386 When hydrogen sulfide gas is bubbled into a solution of sodium hydroxide, the reaction forms... Problem 87AE:
387 Write the balanced chemical equations for
a. the complete combustion of acetic acid (CH3COOH),... Problem 88AE: If 1.5 mol C2H5OH, 1.5 mol C3H8, and 1.5 mol CH3CH2COCH3 are completely combusted in oxygen, which... Problem 89AE:
3.89 The effectiveness of nitrogen fertilizers depends on both their ability to deliver nitrogen to... Problem 90AE:
3.90
a. The molecular formula of acetylsalicylic acid (aspirin), one of the most common pain... Problem 91AE: Very small semiconductor crystals, composed of approximately 1000 to 10,000 atoms, are palled... Problem 92AE: a. One molecule of the antibiotic penicillin G has a mass of 5.342 x 10'21 g. What is the molar mass... Problem 93AE: Serotonin is a compound that conducts nerve impulses in the brain. It contains 68.296 0, 6.86% H,... Problem 94AE:
3.94 The koala dines exclusively on eucalyptus leaves Its digestive system detoxifies the... Problem 95AE:
3.95 Vanillin, the dominant flavoring in vanilla, contains C, H, and 0. When 1.05 g of this... Problem 96AE:
3.96 An organic compound was found to contain only C, H, and Cl. When a 1.50-g sample of... Problem 97AE:
3.97 A compound, KBrO,, where x is unknown, is analyzed and found to contain 52-92% Br. What is the... Problem 98AE: 398 An element X forms an iodide (X13) and a chloride (XCl3). The iodide is quantitatively convened... Problem 99AE: A method used by the U.S. Environmental Protection Agency (EPA) for determining the concentration of... Problem 100AE:
3.100 A chemical plant uses electrical energy to decompose aqueous solutions of NaCI to give Cl2... Problem 101AE: The fat stored in a camel’s hump is a source of both energy and water. Calculate the mass of H20... Problem 102AE:
3.102 When hydrocarbons are burned in a limited amount of air, both CO and CO, form. When 0-450 9... Problem 103AE:
3.103 A mixture of N2(g) and H2(g) reacts in a closed container to form ammonia, NH3(g). The... Problem 104AE:
3.104 A mixture containing KClO3, K2CO3, KHCO3, and KCI was heated, producing
CO2, O2, and H2O... Problem 105AE: When a mixture of 10.0 g of acetylene (C2H2) and 10.0 g of oxygen (O2) is ignited, the resulting... Problem 106IE:
3.106 The semiconductor gallium arsenide, GaAs, is used in high-speed integrated circuits,... Problem 107IE:
3.107 Paclitaxel, C47H51NO14, is an anticancer compound that is difficult to make in the lab. One... Problem 108IE:
3.108 Consider a sample of calcium carbonate in the form of a cube measuring 2.005 in. on each... Problem 109IE:
3.109
a. You are given a cube of silver metal that measures 1.000 cm on each edge. The density of... Problem 110IE:
3.110
a. If an automobile travels 225 mi with a gas mileage of 20.5 mi/gal, how many kilograms of... Problem 111IE Problem 112IE:
3.112 A particular coal contains 2.596 sulfur by mass. When this coal is burned at a power plant,... Problem 113IE: Hydrogen cyanide, HCN, is a poisonous gas. The lethal dose is approximately 300 mg HCN per kilogram... Problem 114IE:
3.114 The source of oxygen that drives he internal combustion engine in an automobile air. Air is... Problem 115IE:
3.115 The therrnite reaction, Fe2O3 +Al Al2O3 + Fe produces so much heat that the Fe product... Problem 116IE:
3.116 One of the most bizarre reactions in chemistry is called the Ugi reaction:
... format_list_bulleted
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