Chemistry for Engineering Students
3rd Edition
ISBN: 9781285199023
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
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Chapter 8, Problem 8.37PAE
Interpretation Introduction
To determine: how p-n junction functions as a voltage-gated switch.
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10d
122
CHAPTER 5ID
15. Which of the following best describes the particle-level bonding in a crystal of KBr? iupil doiw
(A) alternating positive and negative metal ions in a crystal lattice framework.
(B) positive and negative ions in fixed position in a crystal lattice framework.
(C) mobile valence electrons shared between positive metal ions.
(D) metallic and nonmetallic atoms covalently bonded in a 3-dimenional framework.
() HO
(C) CC
(D) CH'OE
Questions 16-17 use the following information.
6801
9010 oloegsini doidW8
H H
H---H
H H
Ethane
wolod a
(B)
но-с-Сн, — СH, — СH, — СH,
ннн нннн
H-C-C- C-C-C-C-C-H
|| | | I||
Η Η Η Η
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H.
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Heptane
Pentanoic Acid
10
Name
Chemical Formula
Molar Mass (g/mole)
Boiling Point (°C)
Ethane
30.07
-88.5
Heptane
16
100.20
98.1-98.7
Pentanoic Acid
102.13
186-187
16. Heptane and pentanoic acid have very similar molar masses, but pentanoic acid has a significantly
higher boiling point. Which of the following statements best helps explain this observation?
(A)…
(a)
Answer parts i), i),ii) and iv) side by side so that the relative
scales are obvious, include electron occupancy.
(i) Draw the band structure of potassium
(ii) Draw the band structure of silicon
(iii) Draw the band structure of carbon
(iv) Draw the band structure of germanium
(b)
Based on your diagrams, state the order of electrically
conductivity for the four elements at 300 K, from the smallest to
the highest - explain your choice.
Magnesium has an electron configuration of 1s? 2s? 2p° 3s?. Using
band diagrams explain why this element is considered an
(c)
electrical conductor.
(d)
improve its ability to conduct electricity. What type of extrinsic
semiconductor results and explain how the addition of arsenic
increases conductivity (use diagrams if necessary)?
A small amount of arsenic is added to a sample of silicon to
(i) Gallium phosphide (GaP) has a band gap of 2.26 eV. Calculate
the wavelength of light emitted in nm (1 eV = 1.6 x 1019 J).
(e)
(ii) It is required for a…
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 - Using circles, draw regular two-dimensional...Ch. 8 - Prob. 8.11PAECh. 8 - Prob. 8.12PAECh. 8 - Prob. 8.13PAECh. 8 - Prob. 8.14PAECh. 8 - 8.13 What is the coordination number of atoms in...Ch. 8 - Prob. 8.16PAECh. 8 - Prob. 8.17PAECh. 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. 8.21PAECh. 8 - 8.20 How many electrons per atom are delocalized...Ch. 8 - Prob. 8.23PAECh. 8 - Prob. 8.24PAECh. 8 - Prob. 8.25PAECh. 8 - 8.24 What is the key difference between metallic...Ch. 8 - Prob. 8.27PAECh. 8 - Prob. 8.28PAECh. 8 - 8.25 Draw a depiction of the band structure of a...Ch. 8 - Prob. 8.30PAECh. 8 - Prob. 8.31PAECh. 8 - Prob. 8.32PAECh. 8 - Prob. 8.33PAECh. 8 - Prob. 8.34PAECh. 8 - Prob. 8.35PAECh. 8 - Prob. 8.36PAECh. 8 - Prob. 8.37PAECh. 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 - Prob. 8.43PAECh. 8 - Prob. 8.44PAECh. 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. 8.48PAECh. 8 - 8.43 Identify the kinds of intermolecular forces...Ch. 8 - Prob. 8.50PAECh. 8 - Prob. 8.51PAECh. 8 - Explain from a molecular perspective why graphite...Ch. 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. 8.57PAECh. 8 - Prob. 8.58PAECh. 8 - Prob. 8.59PAECh. 8 - Suppose that three unknown pure substances are...Ch. 8 - 8.51 Suppose that three unknown pure substances...Ch. 8 - 8.52 Rank the following hydrocarbons in order of...Ch. 8 - Prob. 8.63PAECh. 8 - Prob. 8.64PAECh. 8 - Prob. 8.65PAECh. 8 - Prob. 8.66PAECh. 8 - Prob. 8.67PAECh. 8 - Prob. 8.68PAECh. 8 - Why is there no isotactic or syndiotactic form of...Ch. 8 - Prob. 8.70PAECh. 8 - Prob. 8.71PAECh. 8 - Prob. 8.72PAECh. 8 - 8.61 Distinguish between a block copolymer and a...Ch. 8 - Prob. 8.74PAECh. 8 - Prob. 8.75PAECh. 8 - Prob. 8.76PAECh. 8 - Prob. 8.77PAECh. 8 - 8.66 What structural characteristics are needed...Ch. 8 - Prob. 8.79PAECh. 8 - Prob. 8.80PAECh. 8 - Prob. 8.81PAECh. 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 In previous chapters, we have noted that...Ch. 8 - Prob. 8.104PAECh. 8 - Prob. 8.105PAE
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Similar questions
- 8.96 A business manager wants to provide a wider range of p- and n-type semiconductors as a strategy to enhance sales. You are the lead materials engineer assigned to communicate with this manager. How would you explain why there are more ways to build a p-type semiconductor from silicon than there are ways to build an n-type semiconductor from silicon?arrow_forwardAre all alloys homogeneous solutions? Explain your answer.arrow_forward6:23 @ X l 77% i (ii) Alloys have similar structures to pure metals. Give a labelled diagram that shows the structure of a typical alloy, such as brass.arrow_forward
- 2. What is the coordination number structure formed by most semiconductors and electronic materials (GaAs, Cds)arrow_forward4.50 Sketch the atomic packing of (a) the (100) plane for the BCC crystal structure, and (b) the (201) plane for the FCC crystal structure (similar to Figures 4.206 and 4.216).arrow_forward13. Show that the maximum packing ratio in the diamond structure is n/3/16. [Hint: The structure may be viewed as two interpenetrating fcc lattices, arranged such that each atom is surrounded by four other atoms, forming a regular tetrahedron.] 14. A quantitative theory of bonding in ionic crystals was developed by Born and Meyer along the following lines: The total potential energy of the system is taken to be ae? E = N-arrow_forward
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