Problem 1DE:
5.74 Using values from Appendix C, calculate the value of 24H° for each of the following... Problem 1E: Complete combustion of 1 mol of acetone (C2H6O) liberates 1790 kJ: C3H6O(l) + 4O2(g) 3CO2(g) +... Problem 2E:
5.87 Consider the reaction 2H(g) + O2(g) 2H2O(l)
Use the bond enthalpies in Table 5.4 to... Problem 3E: The air bags that provide protection in automobiles in the event of an accident expand because of a... Problem 4E:
5.111 From the following data for three prospective fuels, calculate which could provide the most... Problem 5E:
5.123 Consider two solutions, the first being 50.0 mL of 1.00 MCuSO4 and the second 50.0 mL of... Problem 6E:
For each of the following transitions, give the sign of E and indicate whether a photon is emitted... Problem 7E: In this chapter, we have learned about the photoelectric effect and its impact on the formulation of... Problem 8E:
6.12 State where in the periodic table these elements appear
elements with the valence-shell... Problem 9E: Einstein's 1905 paper on the photoelectric effect was the first important application of Planck's... Problem 10E:
5.48 Consider the decomposition of liquid benzene,C6H6(l) to gaseous acetylene, C2H2(g):
C6 H 6... Problem 11E: Under constant-volume conditions, the heat of combustion of glucose (C6H12O6) is 15.57kJ/g. A 3... Problem 12E: Given the data use Hess's law to calculate H for the reaction N20(g) + NO2(g) NO(g) Problem 13E:
5.67
What is meant by the term standard conditions with reference to enthalpy changes?
What is... Problem 14E: S
5.68
What is the value of the standard enthalpy of formation of an element in its most stable... Problem 15E: For each of the following compounds, write a balanced thermochemical equation depicting the... Problem 16E: Write balanced equations that describe the formation of the following compounds from elements in... Problem 17E: The following is known as the thermite reaction: 2A1(s) + Fe2O3(s)Al2O3(s) + 2Fe(s) This highly... Problem 18E: (a) What are the units usually used to express the rates of reactions occurring in solution? (b)... Problem 19E: Using values from Appendix C , calculate the standard enthalpy change for each of the following... Problem 20E:
5.77 Gasoline is composed primarily of hydrocarbons, including many with eight carbon atoms,... Problem 21E Problem 22E: Ethanol (C2H5OH) is blended with gasoline as an automobile fuel. Write a balanced equation for the... Problem 23E:
5.80 Methanol (CH3OH) is used as a fuel in race cars.
Write a balanced equation for the... Problem 24E:
5.81 Without doing any calculations, predict the sign of for each of the following... Problem 25E:
5.82 Without doing any calculations, predict the sign of for each of the following reactions:
2... Problem 26E: Use bond enthalpies in Table 5.4 Q to estimate for each of the following reactions: a. H - H(g) + Br... Problem 27E: Use bond enthalpies in Table 5.40 to estimate for each of the following reactions: a. b. Problem 28E: Use enthalpies of formation given in Appendix C to calculate for the reaction Br2(g) 2 Br(g), and... Problem 29E:
5.86
The nitrogen atoms in an N2 molecule are held together by a triple bond; use enthalpies of... Problem 30E:
5.89
What is meant by the term fuel value?
Which is a greater source of energy as food, 5 g of fat... Problem 31E:
5.90
Which releases the most energy when metabolized, 1 g of carbohydrates or 1 g of fat?
A... Problem 32E:
5.91
A serving of a particular ready-to-serve chicken noodle soup contains 2.5 g fat, 14 g... Problem 33E:
5.92 A pound of plain M&M® candies contains 96 g fat, 320 g carbohydrate, and 21 g protein. What... Problem 34E:
5.93 The heat of combustion of fructose, C6H12O6, is — 2812kJ/mol. If a fresh golden delicious... Problem 35E:
5.94 The heat of combustion of ethanol, C2H5OH(l), is — 1367Wmol. A batch of Sauvignon Blanc wine... Problem 36E:
5.95 The standard enthalpies of formation of gaseous propyne (C3H4), propylene (C3H6), and propane... Problem 37E:
5.98 It is interesting to compare the ‘fuel value’ of a hydrocarbon in a hypothetical world where... Problem 38E: At the end of 2012, global population was about 7.0 billion people. What mass of glucose in kg would... Problem 39E Problem 40E: (a) For a generic second-order reaction, what quantity, when graphed versus time, will yield a... Problem 41E: A sample of gas is contained in a cylinder-and-piston arrangement it undergoes the change in state... Problem 42E: Limestone stalactites and stalagmites are formed in caves by the following reaction: Ca2+ (aq)... Problem 43E: Consider the systems shown in Figure 5.10. In one case the battery becomes completely discharged by... Problem 44E:
5.105 A house is designed to have passive solar energy features. Brickwork incorporated into the... Problem 45E:
5.108 A coffee-cup calorimeter of the type shown in Figure 5.18 contains 150.0 g of water at 25.1... Problem 46E:
5.107
When a 0.235-9 sample of benzoic acid is combusted in a bomb calorimeter (Figure 5.19), the... Problem 47E:
5.108 Meals-ready-to-eat (MREs) are military meals that can be heated on a flameless heater. The... Problem 48E: 5.109 Burning methane in oxygen can produce three different carbon-containing products: soot (very... Problem 49E Problem 50E: Ammonia (NH3) boils at -33 °C; at this temperature it has a density of 0.81 g/cm3. The enthalpy of... Problem 51E Problem 52E Problem 53E:
5.116 TheSun supplies about 1.0 kilowatt of energy for each square meter of surface area (
1.0... Problem 54E:
5.117 Itis estimated that the net amount of carbon dioxide fixed by photosynthesis on the landmass... Problem 55E:
5.118 At 20 °C (approximately room temperature) the average velocity of N2molecules in air is 1050... Problem 56E: Suppose an Olympic diver who weighs 52.0 kg executes a straight dive from a 10-m platform. At the... Problem 57E:
5.120 Consider the combustion of a single molecule of CH4 (g), forming H20(l) as a product.
How... Problem 58E:
5.121 Consider the following unbalanced oxidation-reduction reactions in aqueous solution:
Ag+(aq)... Problem 59E: Consider the following acid-neutralization reactions involving the strong base NaOH(aq): HNO3(aq) +... Problem 60E:
5.125 A sample of a hydrocarbon is combusted completely in O2(g) to produce 21.83 g CO2(g), 4.47 g... Problem 61E:
5.126 The methane molecule, CH4, has the geometry shown in Figure 2.17 . Imagine a hypothetical... Problem 62E:
5.127 One of the best-selling light, or low-calorie, beers is 4.2% alcohol by volume and a 12-oz... Problem 63E: A source of electromagnetic radiation produces infrared light. Which of the following could be the... Problem 64E: Which type of visible light has a longer wavelelength, red or blue light? Problem 65E: Consider the following three statements: For any electromagnetic radiation, the product of the... Problem 66E Problem 67E Problem 68E:
A laser emits light that has a frequency of 4.69 x 1014 s 1. What is the energy of one photon of... Problem 69E Problem 70E: Calculate the velocity of a neutron whose de Broglie wavelength is 505 pm. The mass of a neutron is... Problem 71E: An orbital has n = 4 and ml = 0, 1, 2, 3 -3, - 2, - 1, 0, 1, 2, 1, 2, 3 -3, -2 1, 2, 3, 4 - 1. What... Problem 72E:
What is the designation for the subshell with = 5 and 1 = 1?
How many orbitals are in this... Problem 73E: How many of the elements in the second row of the periodic table (Li through Ne) will have at least... Problem 74E: Write the electron configuration for silicon, element 14, in its ground state. How many unpaired... Problem 75E: A certain atom has an ns2np2electron configuration in its outermost occupied shell. Which of the... Problem 76E:
Which group of elements is characterized by an ns2np2 electron configuration in the outermost... Problem 77E:
A certain atom has a [noble gas]5s24d105p4 electron configuration. Which element is... Problem 78E Problem 79E Problem 80E:
6.2 A popular kitchen appliance produces electromagnetic radiation with a frequency of 2450 MHz.... Problem 81E: 6.3 The following diagrams represent two electromagnetic waves. drawn on the same scale. a Which... Problem 82E:
6.4 Stars do not all have the same temperature. The color of light emitted by stars is... Problem 83E: 6 5 The familiar phenomenon of a rainbow results from the diffraction of sunlight through raindrops... Problem 84E:
6.7 A certain quantum mechanical system has the energy levels shown in the accompanying diagram.... Problem 85E: Consider the three electronic transitions in a hydrogen atom shown here, labeled A, B, and C. Three... Problem 86E Problem 87E:
6.9 The contour representation of one of the orbitals for the n = 3 shell of a hydrogen atom is... Problem 88E:
6.10 The accompanying drawing shows a contour plot for a dyz orbital. Consider the quantum numbers... Problem 89AE:
8.11 Four possible electron configurations for a nitrogen atom are shown below, but only one... Problem 90AE:
6.14
a What is the relationship between the wavelength and the frequency of radiant energy?
b Ozone... Problem 91AE: Label each of the following statements as true or false. For those that are false, correct the... Problem 92AE: Determine which of the following statements are false and correct them. The frequency of radiation... Problem 93AE: Arrange the following kinds of electromagnetic radiation in order of increasing wavelength:... Problem 94AE: List the following types of electromagnetic radiation in order of increasing wavelength: the gamma... Problem 95AE: What is the frequency of radiation that has a wavelength of 10kma, about the size of a bacterium?... Problem 96AE: What is the frequency of radiation whose wavelength is 0.86 nm? What is the wavelength of radiation... Problem 97AE: A laser pointer used in a lecture hall emits light at 650 nm. What is the frequency of this... Problem 98AE Problem 99AE: If human height were quantized in 1-foot increments, what would happen to the height of a child as... Problem 100AE: A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in Figure 6.4.... Problem 101AE: The complete combustion of ethanol, C2H5OH(l), to formH20(g) and CO2{g) at constant pressure... Problem 102AE: The decomposition of Ca(OH)2(s) into CaO(s) and H20(g) at constant pressure requires the addition of... Problem 103AE Problem 104AE:
5.42 Without referring to tables, predict which of the following has the higher enthalpy in each... Problem 105AE: Consider the following reaction: 2 Mg(s) + 02(g)2 MgO(s) H-1204 kJ Is this reaction exothermic or... Problem 106AE:
544 Consider the following reaction:
2 CH3OH(g)→2CH4 (g) + 02(g) = + 252.8 kJ
a. Is this reaction... Problem 107AE: When solutions containing silver ions and chloride ions are mixed, silver chloride precipitates Ag+... Problem 108AE: At one time, a common means of forming small quantities of oxygen gas in the laboratory was to heat... Problem 109AE Problem 110AE: 5.49
a What are the units of molar heat capacity?
What are the units of specific heat?
If you know... Problem 111AE: Two solid objects, A and B, are placed in boiling water and allowed to come to the temperature of... Problem 112AE: What is the specific heat of liquid water? What is the molar heat capacity of liquid water? What is... Problem 113AE:
5.52
a. Which substance in Table 5.2 requires the smallest amount of energy to increase the... Problem 114AE: The specific heat of octane, C8H18(l), is 2.22 J/g-K. How many J of heat are needed to raise the... Problem 115AE:
6.54 Consider the data about gold metal in Exercise 5.26(b).
a. Based on the data, calculate the... Problem 116AE: When a 6-50-g sample of solid sodium hydroxide dissolves in 100 0 g of water in a coffee-cup... Problem 117IE:
5.56
a. When a 4 25-g sample of solid ammonium nitrate dissolves in 60 0 g of water in a coffee-cup... Problem 118IE: A 2.200-g sample of quinone (C5H402) is burned in a bomb calorimeter whose total heat capacity is... Problem 119IE:
8.68 A 1.800-g sample of phenol (C6H5OH) was burned in a bomb calorimeter whose total heat capacity... Problem 120IE:
5.60 Under constant-volume conditions, the heat of combustion of benzoic acid (C6H5COOH) is 26.38... Problem 121IE:
5.61 Can you use an approach similar to Hess's law to calculate the change in internal energy, E,... Problem 122IE:
5.62 Consider the following hypothetical reactions:
A B = + 30 kJ
B C = + 60 kJ
Use... Problem 123IE: Calculate the enthalpy change for the reaction P4O6(s) + 2 O2(g) -P4O10(s) given the following... Problem 124IE: From the enthalpies of reaction calculate H for the reaction CO(g) + 2 H2(g) 3OH(g) Problem 125IE: From the enthalpies of reaction Calculate H for the reaction of ethylene with F2: C2H4(g) + 6 F2(g)... format_list_bulleted
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