Problem 3.1P Problem 3.2A: If blue spheres represent nitrogen atoms and red spheresre present oxygen atoms, which box... Problem 3.3P Problem 3.4A: APPLY 3.4 The major ingredient in ordinary safety matches is potassium chlorate, KClO3, a substance... Problem 3.5P: Calculate the molecular weight of sulfuric acid (H2SO4) . Problem 3.6A: Conceptual APPLY 3.6 Use the structural formula of sucrose to determine its molecular weight and... Problem 3.7P: PRACTICE 3.7 How many moles arc in 5.26 g of NaHCO3, the main ingredient in Alka Seltzer tablets? Problem 3.8A: APPLY 3.8 When a diabetic experiences low blood glucose, possibly due to an excess of insulin or... Problem 3.9P: PRACTICE 3.9 Aspirin is prepared by reaction salicyclic acid (C7H6O3) with acetic anhydride (C4H6O3)... Problem 3.10A: APPLY 3.10 Refer to the balanced reaction for the synthesis aspirin in Problem 3.9. (a) How many... Problem 3.11P: PRACTICE 3.11 Ethyl alcohol is prepared industrially by the react ion of ethylene, C2H4, with water.... Problem 3.12A: APPLY 3.12 (a) Diethyl ether (C4H10O), the “ether” used medically as an aesthetic, is prepared... Problem 3.13P: Conceptual PRACTICE 3.13 The following diagram represents the reaction of A (red spheres) with B,... Problem 3.14A: Conceptual APPLY 3.14 Draw a diagram similar to the one shown in Problem 3.13 for the following... Problem 3.15P: Lithium oxide is used aboard the space shuttle to remove water from the air supply. (a) If 80.0 kg... Problem 3.16A: APPLY 3.16 After lithium hydroxide is produced aboard the space shuttle by reaction of Li2O with H2O... Problem 3.17P: PRACTICE 3.17 What is the empirical formula of the ingredient in Bufferin tablets that has the... Problem 3.18A: Conceptual APPLY 3.19 Use the structural formula for glucose to determine the molecular formula.... Problem 3.19P: PRACTICE 3.20 Menthol, a flavouring agent obtained from peppermint oil, contains carbon, hydrogen,... Problem 3.20A: PRACTICE 321 Combustion analysis is performed on 0.50 g of a hydrocarbon, and 1.55 g of CO2 and... Problem 3.21P: PRACTICE 3.23 A compound has an empirical formula of C6H5 as determined from combustion analysis.... Problem 3.22A: APPLY 3.24 Combustion analysis was performed on 1.00 g of a compound containing C, H, and N, and... Problem 3.23P Problem 3.24P: Match the terms percent yield and percent atom economy with their descriptions. (a) Efficiency of a... Problem 3.25P: Examine two reactions important in chemical synthesis of organic compounds. Reaction 1: An addition... Problem 3.26P: Propene is a raw material for a wide variety of products including the polymer polypropylene used in... Problem 3.27P: Ibuprofen (the active ingredient in the over-the-counter drugs Advil and Motrin) is a molecule that... Problem 3.28P: The original synthesis for ibuprofen, developed in the 1 960s, had a percent atom economy of 40.0%.... Problem 3.29CP: The reaction of A (red spheres) with B (blue spheres) is shown in the following diagram: Which... Problem 3.30CP: The diagrams represent a reaction on the molecular level.Atoms of A are represented with red... Problem 3.31CP: Fluoxetine, marketed as an antidepressant under the nameProzac, can be represented by the following... Problem 3.32CP: The following diagram represents the reaction of A2 (red spheres) with B2 (blue spheres): (a) Write... Problem 3.33CP: What is the percent composition of cysteine, one of the 20 aminoacids commonly found in proteins?... Problem 3.34CP: Cytosine, a constituent of deoxyribonucleic acid (DNA),can be represented by the following molecular... Problem 3.35CP: A hydrocarbon of unknown formula CxHy was submitted to combustion analysis with the following... Problem 3.36SP: Which of the following equations are balanced? (a) The development reaction in silver-halide... Problem 3.37SP: Which of the following equations are balanced? Balance any that need it. (a) The thermite reaction,... Problem 3.38SP: Balance the following equations: (a) Mg+HNO3H2+Mg(NO3)2 (b) CaC2+H2OCa(OH)2+C2H2 (c) S+O2SO3 (d)... Problem 3.39SP: Balance the following equations: (a) The explosion of ammonium nitrate: NH4NO3N2+O2+H2O (b) The... Problem 3.40SP: Balance the following equations: (a) SiCl4+H2OSiO2+HCl (b) P4O10+H2OH3PO4 (c) CaCN2+H2OCaCO3+NH3 (d)... Problem 3.41SP: Balance the following equations: aVCl3+Na+COVCO6+NaClbRuI3+CO+AgRuCO5+AgIcCoS+CO+CuCo2CO8+Cu2S Problem 3.42SP: Balance the following equations. (a) C6H5NO2+O2CO2+H2O+NO2 (b) Au+H2SeO4Au2( SeO4)3+H2SeO3+H2O (c)... Problem 3.43SP: Balance the following equations. (a) CO( NH2)2(aq)+HOCl(aq)NCl3(aq)+CO2(aq)+H2O(l) (b) Ca3(... Problem 3.44SP: What are the molecular (formula) weights of the following substances? (a) Hg2Cl2 (calomel, used at... Problem 3.45SP: What are the formulas of the following substances? (a) PCl?; Mol. wt. = 137.3 (b) Nicotine,... Problem 3.46SP: What are the molecular weights of the following pharmaceuticals? (a) C33H35FN2O5 (atorvastatin,... Problem 3.47SP Problem 3.48SP: How many grams are in a mole of each of the following substances? (a) Ti (c) Hg (b) Br2 (d) H2O Problem 3.49SP Problem 3.50SP: How many moles of ions are in 27.5 g of MgCl2? Problem 3.51SP: How many moles of anions are in 35.6 g of AlF3? Problem 3.52SP: What is the molecular weight of chloroform if 0.0275mol weighs 3.28 g? Problem 3.53SP: What is the molecular weight of cholesterol if 0.5731mol weighs 221.6 g? Problem 3.54SP: 3.52 Iron (II) sulfate, FeSO4, is prescribed for the treatment of anemia. How many moles of FeSO4... Problem 3.55SP Problem 3.56SP: An average cup of coffee contains about 125 mg of caffeine, C8H10N4O2. How many moles of caffeine... Problem 3.57SP Problem 3.58SP: A sample that weighs 25.12 g contains 6.0221023 particles. If 25.00% of the total numbers of... Problem 3.59SP Problem 3.60SP Problem 3.61SP Problem 3.62SP: In the preparation of iron from hematite, Fe2O3 reacts withcarbon: Fe2O3+CFe+CO2Unbalanced (a)... Problem 3.63SP: An alternative method for preparing pure iron from Fe2O3 is by reaction with carbon monoxide:... Problem 3.64SP: Magnesium metal burns in oxygen to form magnesiumoxide, MgO. (a) Write a balanced equation for the... Problem 3.65SP: Ethylene gas, C2H4 , reacts with water at high temperature toyield ethyl alcohol, C2H6O . (a) How... Problem 3.66SP Problem 3.67SP: Titanium dioxide (TiO2) , the substance used as the pigment in white paint, is prepared industrially... Problem 3.68SP Problem 3.69SP: Aluminum reacts with oxygen to yield aluminum oxide. If5.0 g of AI reacts with 4.45 g of O2 , what... Problem 3.70SP: The industrial production of hydriodic acid takes place by treatment of iodine with hydrazine (N2H4)... Problem 3.71SP: An alternative method for producing hydriodic acid is the reaction of iodine with hydrogen sulfide:... Problem 3.72SP: Nickel(II) sulfate, used for nickel plating, is prepared by treatment of nickel(II) carbonate with... Problem 3.73SP: Hydrazine, N2H4 , once used as a rocket propellant, reacts with oxygen: N2H4+O2N2+2H2O (a) How many... Problem 3.74SP: Assume that you have 1.39 mol of H2 and 3.44 mol of N2 .How many grams of ammonia (NH3) can you... Problem 3.75SP: Hydrogen and chlorine react to yield hydrogen chloride: H2+Cl22HCl . How many grams of HCl are... Problem 3.76SP: How many grams of the dry-cleaning solvent 1,2-dichloroethane(also called ethylene chloride),... Problem 3.77SP: How many grams of each product result from the following reactions, and how many grams of which... Problem 3.78SP: Limestone (CaCO3) reacts with hydrochloric acid according to the equation CaCO3+2HClCaCl2+H2O+CO2... Problem 3.79SP: Sodium azide (NaN3) yields N2 gas when heated to 300 °C,a reaction used in automobile air bags. If... Problem 3.80SP: Acetic acid (CH3CO2H) reacts with isopentyl alcohol (C5H12O) to yield isopentyl acetate (C7H14O2) ,... Problem 3.81SP: Cisplatin [Pt( NH 3)2Cl2] , a compound used in cancer treatment, is prepared by reaction of ammonia... Problem 3.82SP: If 1.87 g of acetic acid (CH3COOH) reacts with 2.31 g of isopentyl alcohol (C5H12O) to give 2.96 g... Problem 3.83SP: If 3.42 g of K2PtCl4 and 1.61 g of NH3 give 2.08 g of cisplatin (Problem 3.81), what is the percent... Problem 3.84SP: The reaction of tungsten hexachloride (WCl6) with bismuthgives hexatungstendodecachioride W6Cl12 .... Problem 3.85SP: Sodium borohydride, NaBH4 , a substance used in the synthesis of many pharmaceutical agents, can be... Problem 3.86SP: Urea, a substance commonly used as a fertilizer, has the formula CH4N2O . What is its percent... Problem 3.87SP: Calculate the mass percent composition of each of the following substances. (a) Malachite, a... Problem 3.88SP: What are the empirical formulas of substances with the following mass percent compositions? (a)... Problem 3.89SP: Ferrocene, a substance proposed for use as a gasoline additive, has the percent composition 5.42% H,... Problem 3.90SP: What is the empirical formula of stannous fluoride, the first fluoride compound added to toothpaste... Problem 3.91SP: What are the empirical formulas of each of the following substances? (a) Ibuprofen, a headache... Problem 3.92SP: An unknown liquid is composed of 5.57% 11, 28.01 % Cl, and66.42% C. The molecular weight found by... Problem 3.93SP: An unknown liquid is composed of 34.31% C, 5.28% H, and60.41% I. The molecular weight found by mass... Problem 3.94SP: Combustion analysis of 45.62 mg of toluene, a Commonlyused solvent, gives 35.67 mg of H2O and 152.5... Problem 3.95SP: Coniine, a toxic substance isolated from poison hemlock,contains only carbon, hydrogen, and... Problem 3.96SP: Cytochrome c is an iron—containing enzyme found in the cells of all aerobic organisms. If cytochrome... Problem 3.97SP: Nitrogen fixation in the root nodules of peas and other leguminous plants is carried out by the... Problem 3.98SP: Disilane, Si2Hx, is analyzed and found to contain 90.28%silicon by mass. What is the value of x? Problem 3.99SP: A certain metal sulfide, MS2, is used extensively as a high temperature lubricant. If MS2 is 40.06%... Problem 3.100SP: Combustion analysis of a 31.472 mg sample of the widelyused flame retardant Decabrom gave 1.444 mg... Problem 3.101SP: The stimulant amphetamine contains only carbon, hydrogen,and nitrogen. Combustion analysis of a... Problem 3.102SP Problem 3.103SP Problem 3.104SP Problem 3.105SP Problem 3.106SP Problem 3.107SP Problem 3.108MP Problem 3.109MP: The molar mass of HCl is 36.5 g/mol, and the average mass per HCl molecule is 36.5 u. Use the fact... Problem 3.110MP: Assume that gasoline has the formula C8H18 and has a density of 0.703 g/mL. How many pounds of CO2... Problem 3.111MP: Compound X contains only carbon, hydrogen, nitrogen, and chlorine. When 1.00 g of X is dissolved in... Problem 3.112MP Problem 3.113MP: A certain alcoholic beverage contains only ethanol (C2H6O) and water. When a sample of this beverage... Problem 3.114MP: A mixture of FeO and Fe2O3 with a mass of 10.0 g is converted to 7.43 g of pure Fe metal. What are... Problem 3.115MP Problem 3.116MP: When eaten, dietary carbohydrates are digested to yield glucose (C6H12O6) , which is then... Problem 3.117MP Problem 3.118MP Problem 3.119MP: A mixture of XCl3 and XCl5 weighing 10.00 g contains81.04% Cl by mass. How many grams of XCl3 and... Problem 3.120MP: Ammonium nitrate, a potential ingredient of terrorist bombs, can be made non-explosive by addition... Problem 3.121MP: Window glass is typically made by mixing soda ash (Na2CO3) ,RAN limestone (CaCO3) , and silica sand... Problem 3.122MP Problem 3.123MP: Ethylene glycol, commonly used as automobile antifreeze,contains only carbon, hydrogen, and oxygen.... Problem 3.124MP format_list_bulleted
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