EBK CHEMISTRY FOR ENGINEERING STUDENTS,
4th Edition
ISBN: 9781337671439
Author: Holme
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 9, Problem 9.77PAE
9.77 When a reaction is exothermic, is the sum of bond energies of products or of reactants greater?
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Chapter 9 Solutions
EBK CHEMISTRY FOR ENGINEERING STUDENTS,
Ch. 9 - Explain the economic importance of conversions...Ch. 9 - • define work and beat using the standard sign...Ch. 9 - • define state functions and explain their...Ch. 9 - • state the first law of thermodynamics in words...Ch. 9 - • use calorimetric data to obtain values for E and...Ch. 9 - • define Hfo and write formation reactions for...Ch. 9 - • explain Hess’s law in your own words.Ch. 9 - • calculate H for chemical reactions from...Ch. 9 - Prob. 9.1PAECh. 9 - Prob. 9.2PAE
Ch. 9 - Prob. 9.3PAECh. 9 - Prob. 9.4PAECh. 9 - Prob. 9.5PAECh. 9 - Prob. 9.6PAECh. 9 - Define the term internal energy.Ch. 9 - How fast (in meters per second) must an iron ball...Ch. 9 - What is the kinetic energy of a single molecule of...Ch. 9 - 9.10 The kinetic energy of molecules is often used...Ch. 9 - 9.11 Analyze the units of the quantity...Ch. 9 - 9.12 How many kilojoules are equal to 3.27 L atm...Ch. 9 - Prob. 9.13PAECh. 9 - Prob. 9.14PAECh. 9 - 9.15 Carry out the following conversions of energy...Ch. 9 - 9.16 According to Figure 9.2, the total energy...Ch. 9 - 9.17 If a machine does 4.8103kJ of work after an...Ch. 9 - 9.18 Calculate (a) q when a system does 54J of...Ch. 9 - 9.19 If the algebraic sign of E is negative, in...Ch. 9 - 9.20 State the first law of thermodynamics briefly...Ch. 9 - 9.21 Which type of energy heat or work, is valued...Ch. 9 - 9.12 PV-work occurs when volume changes and...Ch. 9 - 9.23 Which system does not work: (a) E=436J ,...Ch. 9 - 9.29 In which case is heat added to the system:...Ch. 9 - Prob. 9.25PAECh. 9 - 9.26 Gas furnaces have achieved impressive...Ch. 9 - Prob. 9.27PAECh. 9 - 9.28 When an electrical appliance whose power...Ch. 9 - Prob. 9.29PAECh. 9 - 9.30 For the example of shallow water and sandy...Ch. 9 - 9.31 A metal radiator is made from 26.0 kg of...Ch. 9 - 9.32 The material typically used to heat metal...Ch. 9 - 9.33 Copper wires used to transport electrical...Ch. 9 - 9.34 A copper nail and an iron nail of the same...Ch. 9 - 9.35 A piece of titanium metal with a mass of 20.8...Ch. 9 - 9.36 Define the term calibration.Ch. 9 - 9.37 A calorimeter contained 75.0 g of water at...Ch. 9 - 9.38 The energy densities of various types of coal...Ch. 9 - 9.39 How much thermal energy is required to heat...Ch. 9 - Prob. 9.40PAECh. 9 - 9.41 Under what conditions does the enthalpy...Ch. 9 - 9.42 Why is enthalpy generally more useful than...Ch. 9 - Prob. 9.43PAECh. 9 - Prob. 9.44PAECh. 9 - 9.45 What happens to the temperature of a material...Ch. 9 - 9.46 The heat of fusion of pure silicon is 43.4...Ch. 9 - 9.47 If 14.8 kJ of heat is given off when 1.6 g of...Ch. 9 - 9.48 Calculate the energy required to convert 1.70...Ch. 9 - 9.49 Hvap=31.3 kJ/mol for acetone. If 1.40 kg of...Ch. 9 - 9.50 When a 13.0-g sample of NaOH(s) dissolves in...Ch. 9 - Prob. 9.51PAECh. 9 - 9.52 Write the formation reaction for each of the...Ch. 9 - 9.53 Using these reactions, find the standard...Ch. 9 - 9.54 The phase change between graphite and diamond...Ch. 9 - 9.55 Hydrogen gas will react with either acetylene...Ch. 9 - 9.56 Using heats of formation tabulated in...Ch. 9 - 9.57 The heat of combustion of butane is —2877...Ch. 9 - 9.58 For the reaction C2H2(g)+2H2(g)C2H6,H=136 kJ....Ch. 9 - 9.59 For the reaction N2(g)+O2(g)2NO(g),H=180.5kJ...Ch. 9 - 9.60 Nitroglycenne, C3H5(NO3)3( l ), is an...Ch. 9 - 9.61 Silane, SiH4, burns according to the...Ch. 9 - 9.62 Sulfur trioxide can be removed from the...Ch. 9 - 9.63 Reactions of hydrocarhons are often studied...Ch. 9 - Prob. 9.64PAECh. 9 - 9.65 When 0.0157 g of a compound with a heat of...Ch. 9 - Prob. 9.66PAECh. 9 - Prob. 9.67PAECh. 9 - 9.68 What are some features of petroleum that make...Ch. 9 - 9.69 How are the roles of transmission substations...Ch. 9 - 9.70 Residential electric service in the United...Ch. 9 - 9.71 In recent years, the notion of a “smart grid”...Ch. 9 - 9.72 Although it can be a nuisance when a laptop...Ch. 9 - 9.73 Without looking up any numerical data or...Ch. 9 - 9.74 Without looking up any numerical data or...Ch. 9 - 9.75 Explain why each of the following chemical...Ch. 9 - 9.76 Which of the following are state functions?...Ch. 9 - 9.77 When a reaction is exothermic, is the sum of...Ch. 9 - Prob. 9.78PAECh. 9 - Prob. 9.79PAECh. 9 - Prob. 9.80PAECh. 9 - 9.81 A substance has the following properties:...Ch. 9 - 9.82 The specific heat of gold is 0.13 J g-1 K-1...Ch. 9 - 9.83 A student performing a calorimetry experiment...Ch. 9 - 9.84 Some claim it would be more logical to use...Ch. 9 - 9.85 The figure below shows a "self-cooling"...Ch. 9 - 9.86 You make some iced tea by dropping 134 g of...Ch. 9 - 9.87 What will be the final temperature of a...Ch. 9 - Prob. 9.88PAECh. 9 - 9.89 A sample of gas is 80.0% CH4 and 20.0% C2H6...Ch. 9 - 9.90 Many engineering designs must incorporate...Ch. 9 - 9.91 You want to heat the air in your house with...Ch. 9 - Prob. 9.92PAECh. 9 - Prob. 9.93PAECh. 9 - Prob. 9.94PAECh. 9 - 9.95 How much heat is required to convert 250 g of...Ch. 9 - 9.96 Most first aid "cold packs" are based on the...Ch. 9 - 9.97 Suppose that the working fluid inside an...Ch. 9 - 9.98 Hydrogen combines with oxygen in fuel cells...Ch. 9 - 9.99 The chemical reaction...Ch. 9 - 9.100 Two baking sheets are made of different...Ch. 9 - Prob. 9.101PAECh. 9 - 9.102 A runner generates 418 kJ of energy per...Ch. 9 - 9.103 One reason why the energy density of a fuel...Ch. 9 - 9.104 An engineer is using sodium metal as a...Ch. 9 - Prob. 9.105PAECh. 9 - Prob. 9.106PAECh. 9 - Prob. 9.107PAECh. 9 - Prob. 9.108PAECh. 9 - Prob. 9.109PAECh. 9 - Prob. 9.110PAE
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- Indicate the correct option.a) Isopolianions are formed around metallic atoms in a low oxidation state.b) Non-metals such as N, S, C, Cl, ... give rise to polyacids (oxygenated).c) Both are incorrect.arrow_forward14. Which one of the compounds below is the major organic product obtained from the following series of reactions? Br OH OH CH3O™ Na+ H*, H₂O SN2 HO OH A B C D 0 Earrow_forwardWavelength (nm) I'm not sure what equation I can come up with other than the one generated with my graph. Can you please show me the calculations that were used to find this equation? Give an equation that relates energy to wavelength. Explain how you arrived at your equation. Wavelength Energy (kJ/mol) (nm) 350 341.8 420 284.8 470 254.5 530 225.7 580 206.3 620 192.9 700 170.9 750 159.5 Energy vs. Wavelength (Graph 1) 400 350 y=-0.4367x+470.82 300 250 200 150 100 50 O 0 100 200 300 400 500 600 700 800 Energy (kJ/mol)arrow_forward
- 5. Draw molecular orbital diagrams for superoxide (O2¯), and peroxide (O2²-). A good starting point would be MO diagram for O2 given in your textbook. Then: a) calculate bond orders in superoxide and in peroxide; indicate which species would have a stronger oxygen-oxygen bond; b) indicate which species would be a radical. (4 points)arrow_forward16. Which one of the compunds below is the final product of the reaction sequence shown here? عملاء .OH Br. (CH3)2CH-C=C H+,H,O 2 mol H2, Pt A OH B OH D OH E OH C OHarrow_forwardIndicate whether any of the two options is correct.a) The most common coordination structure for isopolianions is the prismb) Heteropolianions incorporate alkaline cations into their structuresarrow_forward
- Please correct answer and don't use hand ratingarrow_forwardWavelength (nm) I'm not sure what equation I can come up with other than the one generated with my graph. Can you please show me the calculations that were used to find this equation? Give an equation that relates energy to wavelength. Explain how you arrived at your equation. Wavelength Energy (kJ/mol) (nm) 350 341.8 420 284.8 470 254.5 530 225.7 580 206.3 620 192.9 700 170.9 750 159.5 Energy vs. Wavelength (Graph 1) 400 350 y=-0.4367x+470.82 300 250 200 150 100 50 O 0 100 200 300 400 500 600 700 800 Energy (kJ/mol)arrow_forward6. For the following molecules: draw Lewis dot-structures; use VSEPR method to determine geometries of the following molecules/ions. Are the central atoms in these molecules/ions considered of normal valency, or are they hypervalent? (please read paragraph 2.6) a) BrF3 (6 points) b) BrF4 c) IF₂ 4arrow_forward
- Nonearrow_forward7. Use Pauling's electronegativity values (Table 1.7) and Ketelaar triangle (Fig. 2.28) to classify bonding in: (3 points) a) CIF3 b) ZnCl2 c) PbSarrow_forward7. What is the IUPAC name of the following compound? A) (R)-1-oxo-2-butanol C) (R)-2-hydroxybutanal E) (S)-1-formyl-1-propanol B) (S)-1-oxo-2-butanol D) (S)-2-hydroxybutanal OH Harrow_forward
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