MASTERING CHEMISTY NVCC ACCESS CODE
1st Edition
ISBN: 9780136444459
Author: Tro
Publisher: PEARSON
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Chapter 12, Problem 56E
What are the name and formula of the compound commonly used in the manufacture of glass to increase the index of refraction?
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In certain cases where X-ray diffraction is unsuitable for determiningthe structure of a crystal, neutron diffraction can be used. Instead of X-rays, a beam of neutrons is used to analyze the sample. Calculate the velocity of a beam of neutrons with a wavelength of 2.00 Å.
Which of the following steps is not part of structure determination by X-ray diffraction?
A) Growing a crystal.
B) Exposure of the sample to high energy beams of light with a very long wavelength.
C) Mathematical manipulation of the raw data to obtain an electron density map.
D) Proposing a model consistent with the data in terms of atomic size and charge.
E) All of these steps are necessary.
What are the two reasons that make hydrogen atoms difficult to detect with X-ray diffraction?
Chapter 12 Solutions
MASTERING CHEMISTY NVCC ACCESS CODE
Ch. 12 - What is graphene? Why is graphene unique?Ch. 12 - Prob. 2ECh. 12 - What is a crystalline lattice? How is the lattice...Ch. 12 - Prob. 4ECh. 12 - Prob. 5ECh. 12 - What is the difference between hexagonal closest...Ch. 12 - What are the three basic types of solids and the...Ch. 12 - Prob. 8ECh. 12 - What kinds of forces hold each of the three basic...Ch. 12 - Prob. 10E
Ch. 12 - In an ionic compound, how are the relative sizes...Ch. 12 - Prob. 12ECh. 12 - Show how the fluorite structure accommodates a...Ch. 12 - Prob. 14ECh. 12 - Prob. 15ECh. 12 - Prob. 16ECh. 12 - Prob. 17ECh. 12 - Prob. 18ECh. 12 - Prob. 19ECh. 12 - Describe the difference between vitreous silica...Ch. 12 - Prob. 21ECh. 12 - Prob. 22ECh. 12 - Prob. 23ECh. 12 - Prob. 24ECh. 12 - What is a polymer? What is the difference between...Ch. 12 - Prob. 26ECh. 12 - Prob. 27ECh. 12 - An X-ray beam of unknown wavelength is diffracted...Ch. 12 - Prob. 29ECh. 12 - Determine the coordination number for each...Ch. 12 - Calculate the packing efficiency of the...Ch. 12 - Prob. 32ECh. 12 - Prob. 33ECh. 12 - Molybdenum crystallizes with the body-centred unit...Ch. 12 - Rhodium has a density of 12.41 g / cm3 and...Ch. 12 - Barium has a density of 3.59 g/cm3 and...Ch. 12 - Prob. 37ECh. 12 - Palladium crystallizes with a face-centered cubic...Ch. 12 - Prob. 39ECh. 12 - Identify each solid as molecular, ionic, or...Ch. 12 - Which solid has the highest melting point? Why?...Ch. 12 - Which solid has the highest melting point? Why?...Ch. 12 - Which solid in each pair has the higher melting...Ch. 12 - Which solid in each pair has the higher melting...Ch. 12 - Prob. 45ECh. 12 - Prob. 46ECh. 12 - The unit cells for cesium chloride and barium(ll)...Ch. 12 - Prob. 48ECh. 12 - Prob. 49ECh. 12 - Prob. 50ECh. 12 - Prob. 51ECh. 12 - Consider the zinc blende structure in Figure 12.14...Ch. 12 - Prob. 53ECh. 12 - Prob. 54ECh. 12 - Prob. 55ECh. 12 - What are the name and formula of the compound...Ch. 12 - Prob. 57ECh. 12 - Prob. 58ECh. 12 - Prob. 59ECh. 12 - Prob. 60ECh. 12 - Prob. 61ECh. 12 - How many molecular orbitals are present in the...Ch. 12 - Prob. 63ECh. 12 - Prob. 64ECh. 12 - Prob. 65ECh. 12 - Prob. 66ECh. 12 - Prob. 67ECh. 12 - Prob. 68ECh. 12 - Prob. 69ECh. 12 - Saran, the polymer used to make saran wrap, is an...Ch. 12 - One kind of polyester is a condensation copolymer...Ch. 12 - Nomex, a condensation copolymer used by...Ch. 12 - Prob. 73ECh. 12 - Polyacrylonitrile (PAN) is an addition polymer...Ch. 12 - Prob. 75ECh. 12 - Prob. 76ECh. 12 - Prob. 77ECh. 12 - Prob. 78ECh. 12 - Prob. 79ECh. 12 - Prob. 80ECh. 12 - Prob. 81ECh. 12 - The density of an unknown metal is 12.3 g/cm3 and...Ch. 12 - An unknown metal is found to have a density of...Ch. 12 - Prob. 84ECh. 12 - Prob. 85ECh. 12 - Prob. 86ECh. 12 - Prob. 87ECh. 12 - Prob. 88ECh. 12 - Prob. 89ECh. 12 - Prob. 90ECh. 12 - Prob. 91ECh. 12 - Perovskite is a compound with a cubic unit cell...Ch. 12 - Prob. 93ECh. 12 - Despite Dalton's laws, it is now known that many...Ch. 12 - During the glass manufacturing process, the liquid...Ch. 12 - Why are X-rays used for crystallography? Why not...Ch. 12 - Compare the crystal structure of diamond (C) and...Ch. 12 - Prob. 98ECh. 12 - Prob. 99ECh. 12 - Have each group member select one of the cubic...Ch. 12 - Prob. 101ECh. 12 - Prob. 102ECh. 12 - Prob. 103ECh. 12 - Prob. 104ECh. 12 - Prob. 105ECh. 12 - Prob. 1SAQCh. 12 - A crystalline solid has a body-centered cubic...Ch. 12 - Prob. 3SAQCh. 12 - Prob. 4SAQCh. 12 - Prob. 5SAQCh. 12 - Prob. 6SAQCh. 12 - Prob. 7SAQCh. 12 - Prob. 8SAQCh. 12 - Prob. 9SAQCh. 12 - Prob. 10SAQCh. 12 - Prob. 11SAQCh. 12 - Prob. 12SAQCh. 12 - Prob. 13SAQCh. 12 - Prob. 14SAQCh. 12 - Prob. 15SAQ
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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
- Below, two x-ray diffraction patterns obtained from two samples of the same material, but different crystal sizes are given. Which of the two (the top or the bottom one) has a smaller crystal size? On what feature of these XRD patterns are you basing your answer? Explain in detail how this feature of the XRD pattern indicates crystal sizearrow_forwardIn X-ray crystallography, a small amount of oil is often used to mount the crystal sample on a glass fiber. Explain why neither the oil nor the glass fiber interferes with the diffraction pattern of the crystal.arrow_forwardA crystal was analyzed with x-rays having 1.57 Å wavelength. A reflection was produced at θ = 21.9°. Assuming n = 1, what is the distance (in cm) between the layers of atoms in the crystal?arrow_forward
- 3 Rubidium (Rb) adopts a body-centred cubic, BCC, structure at a pressure of 1 atm. Upon application of high pressure (of the order of 30,000 atm), Rb undergoes a structural phase transition to a face-centred-cubic, FCC, structure. (i) Describe what could be the main factor that induces the phase transformation. (ii) Describe how the diffraction patterns of the two forms would differ.arrow_forwardWhen an X-ray beam of l = 154 pm is incident on the surface of an iron crystal, it produces a maximum diffraction at an angle of u = 32.6°. Assuming n = 1, calculate the separation between layers of iron atoms in the crystal.arrow_forwardSketch a diagram to illustrate the band structure of diamond, assuming no defectsarrow_forward
- The surface energy of a single crystal depends on crystallographic orientation. Does this surface energy increase or decrease with an increase in planar density? Why?arrow_forwardChemistry Diamond, lattice constant (a) = 0.3567 nm, shares the same crystal structure as Si, FCC with lattice constant (a) = 0.5431 nm. How would the x-ray diffraction pattern of diamond be similar and different to that of Si?arrow_forwardThe density of tantalum at 20oC is 16.69 g/cm3 and its unit cell is cubic. Given that the first five observed Bragg diffraction angles are θ =19.31o, 27.88o, 34.95o, 41.41o and 47.69o, find the type of unit cell and its length. Take the wavelength of the x-ray radiation to be λ =154.433 pm.arrow_forward
- An X-ray beam with l = 154 pm incident on the surface of a crystal produced a maximum reflection at an angle of u = 28.3°. Assuming n = 1, calculate the separation between layers of atoms in the crystal.arrow_forward12. What is the main factor in not observing the glass transition behavior in highly cross-linked and highly crystalline polymeric materials?arrow_forward
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