Chemistry for Engineering Students
4th Edition
ISBN: 9781337398909
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 8, Problem 8.75PAE
8.75 Using pentagons, draw arrangements that demonstrate low packing efficiency and higher packing efficiency.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
12. Which best explains why an
aluminum can may be crushed
without it breaking into pieces?
(A) Aluminum has ionic bonds that are not easily broken.
(B) Aluminum has covalent bonds that are not easily broken.
(C) Aluminum has localized valence electrons with direc-
tional bonding.
(D) Aluminum has delocalized valence electrons with nondi-
rectional bonding.
13. Which of the following is true for a solid with a structure as
shown in the diagram below?
6+ 8-6+ 8-6+ 8-6+ 8-6+ 8-6+ 8-
8-
6+68+68+68+68+68+
6+ 8-6+ 8-6+ 8-6+ 8-6+ 8-6+ 8-
8-88-8+68+68+68+68+
(A) It is an atomic solid and consists of atoms with electro-
static attractions.
(B) It is an ionic solid and consists of ions held together by
electrostatic attractions.
(C) It is a molecular solid and consists of polar molecules
with dipole-dipole attractions.
(D) It is a molecular solid and consists of nonpolar mol-
ecules with intermolecular forces.
14. Which of these correctly matches the molecular compound
with the most important…
The interhalogen compound BrF3 is a volatile, straw-colored liquid. The compound exhibits appreciable electrical conductivity because of autoionization (“solv” refers to BrF3 as the solvent): 2 BrF31l2 ∆ BrF2 +1solv2 + BrF4- 1solv2 (a) What are the molecular structures of the BrF2+ and BrF4- ions?
4. LaCoO3 is a very unusual magnetic material that exhibits different types of magnetism in
different temperature ranges. It has been shown to be (a) paramagnetic, (b)
ferromagnetic, and (c) diamagnetic depending on the temperature. Sketch the M vs. H
behavior that would be expected for each below. Be sure to label your axes.
(a)
(b)
(c)
Chapter 8 Solutions
Chemistry for Engineering Students
Ch. 8 - Prob. 1COCh. 8 - • describe the arrangement of atoms in the common...Ch. 8 - • use bind theory to describe bonding in solids.Ch. 8 - Prob. 4COCh. 8 - Prob. 5COCh. 8 - Prob. 6COCh. 8 - Prob. 7COCh. 8 - • explain the connection between intermolecular...Ch. 8 - Prob. 9COCh. 8 - Prob. 10CO
Ch. 8 - Prob. 8.1PAECh. 8 - Why is the C 60form of carbon called...Ch. 8 - Prob. 8.3PAECh. 8 - Prob. 8.4PAECh. 8 - What is the relationship between the structures of...Ch. 8 - Use the web to look up information on nanotubes....Ch. 8 - Prob. 8.7PAECh. 8 - Prob. 8.8PAECh. 8 - Prob. 8.9PAECh. 8 - Prob. 8.10PAECh. 8 - Prob. 8.11PAECh. 8 - Prob. 8.12PAECh. 8 - 8.13 What is the coordination number of atoms in...Ch. 8 - Prob. 8.14PAECh. 8 - Prob. 8.15PAECh. 8 - 8.16 Iridium forms a face-centered cubic lattice,...Ch. 8 - 8.17 Europium forms a body-centered cubic unit...Ch. 8 - 8.18 Manganese has a body-centered cubic unit cell...Ch. 8 - Prob. 8.19PAECh. 8 - 8.20 How many electrons per atom are delocalized...Ch. 8 - Prob. 8.21PAECh. 8 - Prob. 8.22PAECh. 8 - Prob. 8.23PAECh. 8 - 8.24 What is the key difference between metallic...Ch. 8 - 8.25 Draw a depiction of the band structure of a...Ch. 8 - Prob. 8.26PAECh. 8 - Prob. 8.27PAECh. 8 - Prob. 8.28PAECh. 8 - Prob. 8.29PAECh. 8 - Prob. 8.30PAECh. 8 - Prob. 8.31PAECh. 8 - Prob. 8.32PAECh. 8 - Prob. 8.33PAECh. 8 - Suppose that a device is using a 15.0-mg sample of...Ch. 8 - 8.35 What is an instantancous dipole?Ch. 8 - 8.36 Why are dispersion forces attractive?Ch. 8 - 8.37 If a molecule is not very polarizable, how...Ch. 8 - 8.38 What is the relationship between...Ch. 8 - 8.39 Under what circumstances are ion-dipole...Ch. 8 - 8.40 Which of the following compounds would be...Ch. 8 - 8.41 What is the specific feature of N, O, and F...Ch. 8 - Prob. 8.42PAECh. 8 - 8.43 Identify the kinds of intermolecular forces...Ch. 8 - Prob. 8.44PAECh. 8 - 8.45 Describe how interactions between molecules...Ch. 8 - 8.46 What makes a chemical compound volatile?Ch. 8 - 8.47 Answer each of the following questions with...Ch. 8 - 8.48 Why must the vapor pressure of a substance be...Ch. 8 - Prob. 8.49PAECh. 8 - Prob. 8.50PAECh. 8 - 8.51 Suppose that three unknown pure substances...Ch. 8 - 8.52 Rank the following hydrocarbons in order of...Ch. 8 - Prob. 8.53PAECh. 8 - Prob. 8.54PAECh. 8 - Prob. 8.55PAECh. 8 - Prob. 8.56PAECh. 8 - Prob. 8.57PAECh. 8 - Prob. 8.58PAECh. 8 - Prob. 8.59PAECh. 8 - Prob. 8.60PAECh. 8 - 8.61 Distinguish between a block copolymer and a...Ch. 8 - Prob. 8.62PAECh. 8 - Prob. 8.63PAECh. 8 - Prob. 8.64PAECh. 8 - Prob. 8.65PAECh. 8 - 8.66 What structural characteristics are needed...Ch. 8 - Prob. 8.67PAECh. 8 - Prob. 8.68PAECh. 8 - Prob. 8.69PAECh. 8 - Prob. 8.70PAECh. 8 - Prob. 8.71PAECh. 8 - Prob. 8.72PAECh. 8 - Prob. 8.73PAECh. 8 - Prob. 8.74PAECh. 8 - 8.75 Using pentagons, draw arrangements that...Ch. 8 - 8.76 Using circles, draw regular two-dimensional...Ch. 8 - 8.77 What is the difference between a bonding...Ch. 8 - Prob. 8.78PAECh. 8 - 8.79 Most gaseous compounds consist of small...Ch. 8 - 8.80 Why are dipole—dipole forces typically...Ch. 8 - 8.81 Carbon tetrachloride (CCl4) is a liquid at...Ch. 8 - Prob. 8.82PAECh. 8 - Prob. 8.83PAECh. 8 - Prob. 8.84PAECh. 8 - Prob. 8.85PAECh. 8 - Prob. 8.86PAECh. 8 - 8.87 Use the vapor pressure curves illustrated...Ch. 8 - Prob. 8.88PAECh. 8 - 8.89 The following data show the vapor pressure of...Ch. 8 - Prob. 8.90PAECh. 8 - Prob. 8.91PAECh. 8 - Prob. 8.92PAECh. 8 - Prob. 8.93PAECh. 8 - Prob. 8.94PAECh. 8 - Prob. 8.95PAECh. 8 - 8.96 A business manager wants to provide a wider...Ch. 8 - 8.97 The doping of semiconductors can be done with...Ch. 8 - 8.98 If you know the density of material and the...Ch. 8 - Prob. 8.99PAECh. 8 - Prob. 8.100PAECh. 8 - Prob. 8.101PAECh. 8 - Prob. 8.102PAECh. 8 - 8.103 Cryolite (Na3AlF6) is used in refining...Ch. 8 - Prob. 8.104PAECh. 8 - Prob. 8.105PAE
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- The melting point of TiCl4 (-24°C) lies below those ofTiF4 (284°C) and TiBr4 (38°C). Explain why by considering the covalent-ionic nature of these compounds and theintermolecular forces in each case.arrow_forward8.20 How many electrons per atom are delocalized in the sea of electrons model for the following metals? (a) iron,(b) vanadium, (c) silverarrow_forward8.6 At 25°C, B = -42 cm³/mol for CH, and B = -732 cm³/mol for n-C,H10. For a mixture of 0.0300 mol of CH, and 0.0700 mol of n-C,H10 at 25°C in a 1.000-L vessel, calculate the pressure using the virial equation and (a) the approximation B12 = (B, + B,); (b) the fact that for this mixture, B = -180 cm³/mol. Compare the results with the ideal-gas-equation %3D %3D 12 result.arrow_forward
- Define valency by taking examples of silicon and sulphur?arrow_forwardDescribe the fourteen Bravais latticesarrow_forwardCalculate the lattice energy of ionic solid MX, given the following thermodynamic data: M(s) + X2(9) → MX(s) AHræn M(s) → M(g) AHrän= 88. kJ Bond energy of X2 = 196. kJ/mol lonization energy for M(s) = 485. kJ /mol Electron affinity of X = -281. kJ/mol AHrxn = -616. Enter your answer in decimal notation, rounded to the appropriate number of significant figures.arrow_forward
- What are the network covalent atomic solids are composed of?arrow_forward3. Use the following data to estimate AH° for magnesium fluoride. Mg(s) + F2 (g) MgF2 (s) -2913 kJ/mol Lattice energy First ionization energy of Mg Second ionization energy of Mg Electron affinity of F Bond energy of F2 Enthalpy of sublimation for Mg 735 kJ/mol 1445 kJ/mol -328KJ/mol 154KJ/mol 150kJ/molarrow_forwardUse the Born–Haber cycle to calculate the enthalpy of formationof KBr, which crystallizes in the NaCl lattice. Use thesedata in the calculation: Hvap(Br2) = 29.8 kJ/mol; Br2 bondenergy = 190.2 kJ/mol; and Hsub(K) = 79 kJ/mol.arrow_forward
- 9.15 How does a trigonal pyramid differ from a tetrahedron so faras molecular geometry is concerned?arrow_forward11.3p. When comparing the molecular geometries tetrahedral, pyramidal, and bent, all have the same number of electron domains (four), but the bond angles are all different (109.5, 107.5, and 105 respectively). Explain why this is the case.arrow_forward7.56 Draw the Lewis dot structures of the following compounds and identify the number of pi bonds in each. (a) Cl2O , (b) H2CCH2 , (c) HCCCN , (d) SiO2arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
Chemistry for Engineering StudentsChemistryISBN:9781285199023Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781285199023
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning
Unit Cell Chemistry Simple Cubic, Body Centered Cubic, Face Centered Cubic Crystal Lattice Structu; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=HCWwRh5CXYU;License: Standard YouTube License, CC-BY