Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 4, Problem 4.56P
4-56 Magnesium reacts with sulfuric acid according to the following equation. How many moles of lI2 are produced by the complete reaction of 230. mg of Mg with sulfuric acid?
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Introduction to General, Organic and Biochemistry
Ch. 4.2 - Problem 4-1 Following is an unbalanced equation...Ch. 4.2 - Problem 4-2 Balance this equation:Ch. 4.2 - Prob. 4.3PCh. 4.3 - Problem 4-4 When a solution of copper(II)...Ch. 4.4 - Problem 4-5 In each equation, identify the...Ch. 4.5 - Problem 4-6 What is (a) the molecular weight of...Ch. 4.6 - Prob. 4.7PCh. 4.6 - Problem 4-8 We wish to weigh 2.84 mol of sodium...Ch. 4.6 - Problem 4-9 How many moles of C atoms, H atoms,...Ch. 4.6 - Problem 4-10 How many moles of copper(I) ions,...
Ch. 4.6 - Prob. 4.11PCh. 4.7 - Prob. 4.12PCh. 4.7 - Prob. 4.13PCh. 4.7 - Problem 4-14 Ethanol is produced industrially by...Ch. 4.7 - Prob. 4.15PCh. 4.7 - Prob. 4.16PCh. 4 - 4-17 Balance each equation.Ch. 4 - 4-18 Balance each equation.Ch. 4 - Prob. 4.19PCh. 4 - 4-20 Calcium oxide is prepared by heating...Ch. 4 - 4-21 The brilliant white light in some firework...Ch. 4 - Prob. 4.22PCh. 4 - 4-23 When solid carbon burns in a limited supply...Ch. 4 - Prob. 4.24PCh. 4 - 4-25 In the chemical test for arsenic, the gas...Ch. 4 - Prob. 4.26PCh. 4 - Prob. 4.27PCh. 4 - 4-28 Answer true or false. (a) A net ionic...Ch. 4 - 4-29 Balance these net ionic equations. (a)...Ch. 4 - 4-30 In the equation (a) Identify the spectator...Ch. 4 - 4-31 Predict whether a precipitate will form when...Ch. 4 - 4-32 When a solution of ammonium chloride is added...Ch. 4 - 4-33 When a solution of hydrochloric acid, HCl, is...Ch. 4 - Prob. 4.34PCh. 4 - Prob. 4.35PCh. 4 - 4-36 Using the solubility generalizations given in...Ch. 4 - 4-37 Answer true or false. (a) When a substance is...Ch. 4 - Prob. 4.38PCh. 4 - Prob. 4.39PCh. 4 - Prob. 4.40PCh. 4 - Prob. 4.41PCh. 4 - 4-42 Calculate the formula weight of: (a) KCl (b)...Ch. 4 - 4-43 Calculate the molecular weight of: (a)...Ch. 4 - 4-44 Answer true or false. (a) The mole is a...Ch. 4 - 4-45 Calculate the number of moles in: (a) 32 g of...Ch. 4 - 4-46 Calculate the number of grams in: (a) 1.77...Ch. 4 - 4-47 Calculate the number of moles of: (a) O atoms...Ch. 4 - 4-48 Calculate the number of moles of: (a) S2-...Ch. 4 - 4-49 Calculate the number of: (a) nitrogen atoms...Ch. 4 - 4-50 How many molecules are in each of the...Ch. 4 - 4-51 What is the mass in grams of each number of...Ch. 4 - 4-52 The molecular weight of hemoglobin is about...Ch. 4 - 4-53 A typical deposit of cholesterol, C27H46O, in...Ch. 4 - 4-54 Answer true or false. (a) Stoichiometry is...Ch. 4 - 4-55 For the reaction: (a) How many moles of N2...Ch. 4 - 4-56 Magnesium reacts with sulfuric acid according...Ch. 4 - 4-57 Chloroform, CHCl3, is prepared industrially...Ch. 4 - 4-58 At one time, acetaldehyde was prepared...Ch. 4 - 4-59 Chlorine dioxide, ClO2, is used for bleaching...Ch. 4 - 4-60 Ethanol, C2H6O, is added to gasoline to...Ch. 4 - 4-61 In photosynthesis, green plants convert CO2...Ch. 4 - 4-62 Iron ore is converted to iron by heating it...Ch. 4 - Prob. 4.63PCh. 4 - 4-64 Aspirin is made by the reaction of salicylic...Ch. 4 - 4-65 Suppose the preparation of aspirin from...Ch. 4 - 4-66 Benzene reacts with bromine to produce...Ch. 4 - 4-67 Ethyl chloride is prepared by the reaction of...Ch. 4 - 4-68 Diethyl ether is made from ethanol according...Ch. 4 - Prob. 4.69PCh. 4 - Prob. 4.70PCh. 4 - 4-71 Which of these reactions are exothermic, and...Ch. 4 - Prob. 4.72PCh. 4 - Prob. 4.73PCh. 4 - Prob. 4.74PCh. 4 - Prob. 4.75PCh. 4 - Prob. 4.76PCh. 4 - 4-77 To convert 1 mol of iron(III) oxide to its...Ch. 4 - 4-78 (Chemical Connections 4A) How does fluoride...Ch. 4 - Prob. 4.79PCh. 4 - Prob. 4.80PCh. 4 - 4-81 (Chemical Connections 4C) Balance the lithium...Ch. 4 - 4-82 When gaseous dinitrogen pentoxide, N2O5, is...Ch. 4 - Prob. 4.83PCh. 4 - Prob. 4.84PCh. 4 - Prob. 4.85PCh. 4 - 4-86 When an aqueous solution of Na3PO4 is added...Ch. 4 - Prob. 4.87PCh. 4 - 4-88 Chlorophyll, the compound responsible for the...Ch. 4 - 4-89 If 7.0 kg of is added to 11.0 kg of to form...Ch. 4 - 4-90 Lead(lI) nitrate and aluminum chloride react...Ch. 4 - 4-91 Assume that the average red blood cell has a...Ch. 4 - 4-92 Reaction of pentane, C5H12, with oxygen, O2,...Ch. 4 - 4-93 Ammonia is prepared industrially by the...Ch. 4 - 4-94 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is...Ch. 4 - Prob. 4.95PCh. 4 - Prob. 4.96PCh. 4 - Prob. 4.97PCh. 4 - Prob. 4.98PCh. 4 - Prob. 4.99PCh. 4 - Prob. 4.100PCh. 4 - Prob. 4.101PCh. 4 - 4-102 Aspartame, an artificial sweetener used as a...Ch. 4 - 4-103 Caffeine, a central nervous system...
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- 4-57 Chloroform, CHCl3, is prepared industrially by the reaction of methane with chlorine. How many grams of Cl2 are needed to produce 1.50 moles of chloroform?arrow_forward4-93 Ammonia is prepared industrially by the reaction of nitrogen and hydrogen according to the following equation: If 29.7 kg of N2 is added to 3.31 kg of H2, (a) Which reactant is the limiting reagent? (b) How many grams of the other reactant are left over? (c) How many grams of NH3 are formed if the reaction goes to completion?arrow_forward4-52 The molecular weight of hemoglobin is about 68,000 amu. What is the mass in grams of a single molecule of hemoglobin?arrow_forward
- 4-103 Caffeine, a central nervous system stimulant, has the molecular formula C8H10N402. (a) How many moles of caffeine are present in 6.19 1025 molecules of caffeine? (b) Imagine you dissolve caffeine in water to a volume of 100.0 mL, which is known to have a density of 1.23 g/mL. How many molecules of caffeine are present in this volume? (c) How many nitrogen atoms are present in 3.5 mg of caffeine? (d) Complete the skeletal structure of caffeine, where all the bonded atoms are shown but double bonds, triple bonds, and/or lone pairs are missing. (e) Identify the various types of geometries present in each central atom of caffeine using VSEPR theory. (f) Determine the various relative bond angles associated with each central atom of caffeine using VSEPR theory (g) What is the most polar bond in caffeine? (h) Would you predict caffeine to be polar or nonpolar? (j) Consider the combustion of caffeine, which results in formation of NO2(g) as well as other expected products. Write a balanced chemical equation for this reaction. (j) The heat of combustion for caffeine is 2211 kcall/mol. How much heat will be given off if 0.81 g of caffeine is burned completely? (k) Calculate the weight of H2O(g) that can be prepared from 8.00 g of caffeine mixed with 20.3 g of oxygen gas.arrow_forward4-62 Iron ore is converted to iron by heating it with coal (carbon), and oxygen according to the following equation: If the process is run until 3940. g of Fe is produced, how many grams of CO2 will also be produced?arrow_forward4-89 If 7.0 kg of is added to 11.0 kg of to form which reactant is in excess?arrow_forward
- 4-88 Chlorophyll, the compound responsible for the green color of leaves and grasses, contains one atom of magnesium in each molecule. If the percentage by weight of magnesium in chlorophyll is 2.72%, what is the molecular weight of chlorophyll?arrow_forward4-59 Chlorine dioxide, ClO2, is used for bleaching paper. It is also the gas used to kill the anthrax spores that contaminated the Hart Senate Office Building in the fall of 2001. Chlorine dioxide is prepared by treating sodium chlorite with chlorine gas. (a) Balance the equation for the preparation of chlorine dioxide. (b) Calculate the weight of chlorine dioxide that can be prepared from 5.50 kg of sodium chlorite.arrow_forward4-91 Assume that the average red blood cell has a mass of 2 × 10-8 g and that 20% of its mass is hemoglobin (a protein whose molar mass is 68,000). How many molecules of hemoglobin are present in one red blood cell?arrow_forward
- 4-20 Calcium oxide is prepared by heating limestone (calcium carbonate, CaCO3) to a high temperature, at which point it decomposes to calcium oxide and carbon dioxide. Write a balanced equation for this preparation of calcium oxide.arrow_forward4-54 Answer true or false. (a) Stoichiometry is the study of mass relationships in chemical reactions. (b) To determine mass relationships in a chemical reaction, you first need to know the balanced chemical equation for the reaction. (c) To convert from grams to moles and vice versa, use Avogadro’s number as a conversion factor. (d) To convert from grams to moles and vice versa, use molar mass as a conversion factor. (e) A limiting reagent is the reagent that is used up first. (f) Suppose a chemical reaction between A and B requires 1 mol of A and 2 mol of B. If 1 mol of each is present, then B is the limiting reagent. (g) Theoretical yield is the yield of product that should be obtained according to the balanced chemical equation. (h) Theoretical yield is the yield of product that should be obtained if all limiting reagent is con verted to product. (j) Percent yield is the number of grams of product divided by the number of grams of the limiting reagent times 100. (j) To calculate percent yield, divide the mass of product formed by the theoretical yield and multiply by 100.arrow_forward4-61 In photosynthesis, green plants convert CO2 and H2O to glucose, C6H12O6. How many grams of CO2are required to produce 5.1 g of glucose?arrow_forward
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