Physical Universe
16th Edition
ISBN: 9780077862619
Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur
Publisher: Mcgraw-hill Education,
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Chapter 11, Problem 4MC
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A cubic crystal has lattice constant 4.3 A and its density 963 kg/m. If its atomic mass is 23, then
what type of cubic unit cell does it form? (Avogadro's number, Na = 6.02x10").
Select one:
a. FCC
b. SC
c. NON OF THE ABOVE
d. BCC
Zirconium has an HCP crystal structure and
density of 6.51 g/cm³, what is the volume of
its unit cell in cubic meters?
А.
1.396X10-22cm³/unit cell
B.
0.465X10-22cm³/unit cell
C.
0.233X10-22cm³/unit cell
D.
0.698X10-22cm³/unit cell
5- Mechanical properties of materials
depend on temperature, modulus of
elasticity decrease at higher
temperatures
O True
O False
Chapter 11 Solutions
Physical Universe
Ch. 11 - Prob. 1MCCh. 11 - Prob. 2MCCh. 11 - Prob. 3MCCh. 11 - Prob. 4MCCh. 11 - Prob. 5MCCh. 11 - Prob. 6MCCh. 11 - Prob. 7MCCh. 11 - Prob. 8MCCh. 11 - Prob. 9MCCh. 11 - Prob. 10MC
Ch. 11 - Prob. 11MCCh. 11 - Suppose there were molecules that had no...Ch. 11 - Prob. 13MCCh. 11 - Prob. 14MCCh. 11 - Prob. 15MCCh. 11 - Prob. 16MCCh. 11 - Prob. 17MCCh. 11 - Prob. 18MCCh. 11 - Prob. 19MCCh. 11 - Prob. 20MCCh. 11 - Prob. 21MCCh. 11 - Prob. 22MCCh. 11 - Prob. 23MCCh. 11 - Prob. 24MCCh. 11 - Prob. 25MCCh. 11 - Prob. 26MCCh. 11 - Prob. 27MCCh. 11 - Prob. 28MCCh. 11 - Prob. 29MCCh. 11 - Prob. 30MCCh. 11 - Prob. 31MCCh. 11 - Prob. 32MCCh. 11 - Prob. 33MCCh. 11 - Prob. 34MCCh. 11 - Prob. 35MCCh. 11 - Prob. 36MCCh. 11 - Prob. 37MCCh. 11 - Prob. 38MCCh. 11 - Prob. 39MCCh. 11 - Prob. 40MCCh. 11 - Prob. 41MCCh. 11 - Prob. 42MCCh. 11 - Prob. 1ECh. 11 - What kind of solid is ice? Why does ice float when...Ch. 11 - Prob. 3ECh. 11 - Prob. 4ECh. 11 - How could you tell experimentally whether a...Ch. 11 - From which class of solids would you expect...Ch. 11 - Prob. 7ECh. 11 - Prob. 8ECh. 11 - Van der Waals forces are strong enough to hold...Ch. 11 - Prob. 10ECh. 11 - What ions would you expect to find in the crystal...Ch. 11 - Why is the solubility of one gas in another...Ch. 11 - Why do bubbles of gas form in a glass of soda...Ch. 11 - Ordinary tap water tastes different after it has...Ch. 11 - How do unsaturated, saturated, and supersaturated...Ch. 11 - Prob. 16ECh. 11 - Give two ways to tell whether a sugar solution is...Ch. 11 - At 10C, which is more concentrated, a saturated...Ch. 11 - Prob. 19ECh. 11 - What is the difference between a molecular ion and...Ch. 11 - How could you distinguish experimentally between...Ch. 11 - Prob. 22ECh. 11 - You have a solution that contains Cl- ions and...Ch. 11 - You have a solution that contains Ca2+ ions and...Ch. 11 - You have a solution that contains Ag+ ions and...Ch. 11 - What is the easiest way to distinguish between a...Ch. 11 - Prob. 27ECh. 11 - Seawater freezes at a lower temperature than pure...Ch. 11 - Prob. 29ECh. 11 - What are the two chief ions found in seawater?Ch. 11 - (a) Is the percentage of the worlds water that is...Ch. 11 - The pesticide DDT concentrates in the fat of...Ch. 11 - Prob. 33ECh. 11 - Which of the following are weak acids?...Ch. 11 - Would you expect HBr to be a weak or strong acid?...Ch. 11 - Even though ammonia is not a base because its...Ch. 11 - What is the difference, if any, between a basic...Ch. 11 - Is it correct to say that the only ions an acidic...Ch. 11 - Which is more strongly acidic, a solution of pH 3...Ch. 11 - In an acidic solution, why is the OH concentration...Ch. 11 - Prob. 41ECh. 11 - When a salt that contains the negative ion of a...Ch. 11 - Prob. 43ECh. 11 - What salt is formed when a solution of calcium...Ch. 11 - What salt is formed when a solution of calcium...Ch. 11 - What salt is formed when a solution of sodium...Ch. 11 - What salt is formed when a solution of potassium...Ch. 11 - Prob. 48ECh. 11 - Prob. 49ECh. 11 - Boric acid (H3BO3) is a very weak acid. What would...Ch. 11 - The Al3+ ion tends to form AlOH2+ ions in water...Ch. 11 - Prob. 52ECh. 11 - Prob. 53E
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- 8. What is the difference in packing efficiency between the hcp structure and the ccp structure? 9. For a two dimensional lattice with, a1= a a2= a/2 D- T1/3 (a) what is the area of a primitive cell? (b) show that the lattice is a rectangular lattice? (c) draw the Wigner-Seitz cell of this lattice and show that the area of the Wigner-Seitz cell is the same as in (a).arrow_forwardThe group velocity and the phase velocity both exist in the crystal. How are they related? O a. The group velocity is larger than phase velocity. O b. The group velocity is smaller than phase velocity. O c. The group velocity is equal to phase velocity. O d. They are generally not equal.arrow_forwardQ5 // Answer three branches: A-Draw [313] and (101) B- Calculate the number of atoms / unit area for (111), (110), (100) for the BCC crystal. Derive in terms of a C- Explain that sulfur has covalent bonds? With drawing? D-vanadium V has an atomic radius of 0.132nm and a density of 6.1g / cm. Does it have a FC C crystal structure or BC C? 50Cteatmat Aarrow_forward
- what is the packing factor of diamond? mass of carbon is 12 amu and lattice size is 0.36nm. as we know diamond is having cubic unit cell. what is the density of diamond?arrow_forwardQuestion 1 Simple Cubic Lattice, Part 1 Consider a simple cubic (sc) crystal in which one atom is placed at each lattice point. The lattice constant is a = 0.7\: nma=0.7nm. Calculate the volume density of atoms (i.e. number of atoms per unit volume) in unit of cm^{-3}cm−3. Values within 5% error will be considered correct.arrow_forward4. Which of the following techniques is used for controlling the crystal orientation during crystal growth? a. Seed crystal shape b. Crystal substrate orientation c. Magnetic field d. All of the above 5. Which of the following impurities is commonly used to dope silicon to make it a p-type semiconductor? a. Boron b. Phosphorus c. Arsenic d. Antimony 6. Which of the following dopants is commonly used to dope GaAs to make it an n-type semiconductor? a. Boronarrow_forward
- 11. Here are shown the atomic packing schemes for several different crystallographic directions for some hypothetical metal. For each direction the circles represent only those atoms contained within a unit cell, which eircles are reduced from their actual size. -0.40 nm- Π001, 10101 -0.50 nm (001] -0.64 nm- [0111, [101] -0.566 nm- (110] (a) To what crystal system does the unit cell belong? (b) What would this crystal structure be called?arrow_forwardSilicon and germanium are examples of a. insulators O b. semiconductors O c. good conductors O d. superconductorsarrow_forward4. Sketch and identify the crystal structures represented by the following lattice vectors, wherea is the lattice constant: (a) a₁ = ax, a₂ = ay, a3 = az^ (b) a₁ = (x+y), a₂ = (y + 2), ã³ = (x + 2) (c) a = ;(-x+y+z), a,=; (x-y+z), a}= ; (x+y-2) (d) a₁ = (√3x +ŷ), a₂ = (-√³x + y) (e) Consider (d) but with two atoms are located at each lattice point. The atoms are located ₁d₂ = ax at d₁ = O and de (e) is the crystal structure of graphene, one of the most exciting up-and-coming electronic materials due to its very high electron mobility (we will talk about mobility later - briefly, it is a measure of how fast electrons can move in the material). Graphene is a single 2D sheet of carbon atoms (a monoatomic layer of graphite). The scientists who discovered and did the first experiments on graphene were awarded the Nobel Prize in physics in 2010. For graphene, |d₂| = 1.42 °A, the length of the carbon- carbon bond. A carbon nanotube, which some of you may have heard of, is graphene curled up…arrow_forward
- 5. The lattice constant of silicon is 5.43 °A. Calculate the following: (a) the number of silicon atoms in each unit cell. (b) the distance from the center of one silicon atom to the center of its nearest neighbour. (c) the number density (number/cm³) of silicon atoms. (d) the mass density of silicon (g/cm³). (e) the areal density of atoms (number/cm²) on the (110) plane. (f) the distance between two adjacent (111) planes. Hint: The atomic weight (relative atomic mass) of Si is 28.1, and Avogadro's number is 6.02 x 1023.arrow_forwardQI/A) Answer only Seven of the following multiple choice: 1- Brass can be classified in one of the following materials categories: a- Ferrous material. b- Non-ferrous material. c- Composite material. 2- The crystal lattice has a --- a- One dimensional. b- Two dimensional. c- Three dimensional 3- The coordination number for FCC structure is: d- Non-metallic. ----- arrangement d- Four dimensional. a- 2 b- 4 c- 8 d- 12 properties c-Mechanical 5- The ability of materials to resist impact is named c- Strength. 4- Material density classified as a- Physical. b- Chemical. d- Thermal. a- Ductility. 6- One of the following hardness tests are not classified as a macro hardness test: b- Toughness. d- Elasticity. a-Brinell hardness. b-Vickers hardness. c- Knoop diamond. d-Rockwell hardness. 7- Due to Allotropy phenomenon, Iron in range of temperature varried between 769 and 910 C° has one of the following names and crystal strutures: a- Gamma (BCC). 8- One of the following hardening processes not…arrow_forwardMass of carbon is 12 amu and lattice size is 0.36 nm. As we know diamond is having cubic unit cell. What is the density of diamondarrow_forward
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