BuyFind

Chemistry for Engineering Students

4th Edition
Lawrence S. Brown + 1 other
Publisher: Cengage Learning
ISBN: 9781337398909
BuyFind

Chemistry for Engineering Students

4th Edition
Lawrence S. Brown + 1 other
Publisher: Cengage Learning
ISBN: 9781337398909

Solutions

Chapter 8, Problem 8.101PAE
Textbook Problem

8.101 A materials engineer, with an eye toward cost, wants to obtain a material whose degree of polymerization is high. What types of measurements must be made in the laboratory to determine whether the degree of polymerization is acceptable?

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Chapter 8 Solutions

Chemistry for Engineering Students
Ch. 8 - How many solid forms of elemental carbon are...Ch. 8 - Why is the C 60form of carbon called...Ch. 8 - What property of diamond leads to the most...Ch. 8 - Which variables must be controlled and in what...Ch. 8 - What is the relationship between the structures of...Ch. 8 - Use the web to look up information on nanotubes....Ch. 8 - Use the web to look up the experimental conditions...Ch. 8 - That is the difference between an amorphous solid...Ch. 8 - Define packing efficiency.Ch. 8 - 8.10 Using circles, show that a cubic structure...Ch. 8 - 8.11 Calculate the packing efficiencies for both...Ch. 8 - 8.12 Explain why hcp and ccp structures have the...Ch. 8 - 8.13 What is the coordination number of atoms in...Ch. 8 - 8.14 Explain why graphite is described as having a...Ch. 8 - 8.15 Polonium is the only metal that forms a...Ch. 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 - 8.19 The spacing in a crystal lattice can be...Ch. 8 - 8.20 How many electrons per atom are delocalized...Ch. 8 - 8.21 One important physical property of metals is...Ch. 8 - 8.22 The sea of electrons model is not generally...Ch. 8 - 8.23 How does the sea of electrons model of...Ch. 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 - 8.26 In term of band theory what is the difference...Ch. 8 - 8.27 The conductivity of semiconductor increases...Ch. 8 - 8.28 Use the web to find out what a “IIIV”...Ch. 8 - 8.29 Explain how doping affects the electronic...Ch. 8 - 8.30 What type of atom is needed as a dopant in an...Ch. 8 - 8.31 What type of atom is needed as a dopant in a...Ch. 8 - 8.32 Is an n-type semiconductor actually...Ch. 8 - 8.33 How does a p-n junction serve as a...Ch. 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 - 8.42 What type of intermolecular forces must be...Ch. 8 - 8.43 Identify the kinds of intermolecular forces...Ch. 8 - 8.44 Rank the following in order of increasing...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 - Which member of each of the following pairs of...Ch. 8 - 8.50 Predict the order of increasing vapor...Ch. 8 - 8.51 Suppose that three unknown pure substances...Ch. 8 - 8.52 Rank the following hydrocarbons in order of...Ch. 8 - 8.53 Draw the meniscus of a fluid in a container...Ch. 8 - 8.54 When water is in a glass tube such as a...Ch. 8 - 8.55 Why is temperature increased to start most...Ch. 8 - 8.56 What is mean by the term chain termination in...Ch. 8 - 8.57 The monomer of polyvinylchloride is H2C=CHCl...Ch. 8 - 8.58 Why are isotactic or syndiotactic polymers...Ch. 8 - 8.59 What are the products of a condensation...Ch. 8 - 8.60 Nylon-6 made from a single monomer: Sketch a...Ch. 8 - 8.61 Distinguish between a block copolymer and a...Ch. 8 - 8.62 Use the web to look up the polymers wed for...Ch. 8 - 8.63 What is the key physical property that...Ch. 8 - 8.64 What conditions would prohibit the use of a...Ch. 8 - 8.65 What happens molecularly in a thermosetting...Ch. 8 - 8.66 What structural characteristics are needed...Ch. 8 - 8.67 Use the web to find out what pencil erasers...Ch. 8 - 8.68 Use the web to find an application where the...Ch. 8 - 8.69 Define the terms substrate and mask in the...Ch. 8 - 8.70 Silicon nitride is a commonly used masking...Ch. 8 - 8.71 Silicon dioxide is also used as a masking...Ch. 8 - 8.72 In what way(s) are wet etching and plasma...Ch. 8 - 8.73 Estimate the number of atoms that would have...Ch. 8 - 8.74 An important category of MEMS devices is...Ch. 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 - 8.78 Describe how the combination of atomic...Ch. 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 - 8.82 Explain from a molecular perspective why...Ch. 8 - 8.83 A substance is observed to have a high...Ch. 8 - 8.84 Suppose that three unknown pure substances...Ch. 8 - 8.85 If shown structures of monomers that might...Ch. 8 - 8.86 Why is there no isotactic or syndiotactic...Ch. 8 - 8.87 Use the vapor pressure curves illustrated...Ch. 8 - 8.88 Cylinders of compressed gas are equipped with...Ch. 8 - 8.89 The following data show the vapor pressure of...Ch. 8 - 8.90 Geckos are known for their ability to climb...Ch. 8 - 8.91 If you puce 1.0 L of ethanol (C2H3OH) in a...Ch. 8 - 8.92 An environmental engineering team is brought...Ch. 8 - 8.93 Do a web search to find out how p- and n-type...Ch. 8 - 8.94 Hydraulic fluids are liquids moving in a...Ch. 8 - 8.95 It is possible to make syndiotactic...Ch. 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 - 8.99 If a pin is run across a magnet a number of...Ch. 8 - 8.100 You go into the laboratory to look for a...Ch. 8 - 8.101 A materials engineer, with an eye toward...Ch. 8 - 8.102 How is polarizability related to the...Ch. 8 - 8.103 Cryolite (Na3AlF6) is used in refining...Ch. 8 - Use rise web to look up the percentage of dopant...Ch. 8 - 8.105 Use the web to look up the percentage of...

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