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MindTap Engineering for Askeland/Wright's The Science and Engineering of Materials, 7th Edition, [Instant Access], 2 terms (12 months)
7th Edition
ISBN: 9781305111219
Author: Donald R. Askeland; Wendelin J. Wright
Publisher: Cengage Learning US
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Question
Chapter 2, Problem 2.6P
(a)
To determine
The number of atoms of aluminum contained in one square inch.
(b)
To determine
The number of atoms per ![MindTap Engineering for Askeland/Wright's The Science and Engineering of Materials, 7th Edition, [Instant Access], 2 terms (12 months), Chapter 2, Problem 2.6P](https://content.bartleby.com/tbms-images/9781305076761/Chapter-2/images/html_76761-2-2.6p_9.png)
in lead and lithium.
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Students have asked these similar questions
1. Aluminum has a FCC structure. If the atomic radius of aluminum is 0.143 nm, calculate
the volume of its unit cell in cubic meters.
2. Vanadium (V) has a BCC crystal structure, an atomic radius of 0.132 nm, and an atomic
weight of 50.94 g/mol. Compute and compare its theoretical density with the
experimental value found in the table in Chapter 2.
3. Strontium (Sr) has an FCC crystal structure, an atomic radius of 0.215 nm and an atomic
weight of 87.62 g/mol. Calculate the theoretical density for Sr.
4. Determine the indices for the directions shown in the following cubic unit cell:
For Direction A
+z
A
+y
+x
For Direction B
+z
루루
B
+y
5. Calculate theoretical density of Cu (FCC) and Fe (BCC). Compare your results with
measured density of Cu and Iron (Density of Cu-8.93 g/cm³, Density of Fe= 7.87
g/cm³). Elaborate on differences between the calculated and measured ones (if any).
a. Atomic radius of Cu=1.278 Å, Atomic mass of Cu=63.5 g/mol
b. Atomic radius of Fe=1.241 Å, Atomic mass of Fe=55.8 g/mol
Calculate the theoretical density of NiO, given that it has the rock salt crystal structure. You may want to use the table below. The
atomic weights for Ni and O are 58.69 g/mol and 16.00 g/mol, respectively.
Ionic Radius (nm)
P =
i
Cation
Fe²+
Ni²+
Mg2+
Mn2+
g/cm³
0.077
0.069
0.072
0.067
Anion
0²-
S²-
Ionic Radius (nm)
0.140
0.184
Chapter 2 Solutions
MindTap Engineering for Askeland/Wright's The Science and Engineering of Materials, 7th Edition, [Instant Access], 2 terms (12 months)
Ch. 2 - Prob. 2.1PCh. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - Why is it important to consider the structure of a...Ch. 2 - Prob. 2.5PCh. 2 - Prob. 2.6PCh. 2 - Prob. 2.7PCh. 2 - Prob. 2.8PCh. 2 - Prob. 2.9PCh. 2 - Prob. 2.10P
Ch. 2 - Write the electron configuration for the element...Ch. 2 - Prob. 2.12PCh. 2 - Prob. 2.13PCh. 2 - Prob. 2.14PCh. 2 - Prob. 2.15PCh. 2 - Prob. 2.16PCh. 2 - Prob. 2.17PCh. 2 - Prob. 2.18PCh. 2 - Prob. 2.19PCh. 2 - Prob. 2.20PCh. 2 - Prob. 2.21PCh. 2 - Prob. 2.22PCh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24PCh. 2 - Prob. 2.25PCh. 2 - Prob. 2.26PCh. 2 - What are the bonding mechanisms in thermoplastics?Ch. 2 - Prob. 2.28PCh. 2 - Materials such as silicon carbide (SiC) and...Ch. 2 - Prob. 2.30PCh. 2 - Prob. 2.31PCh. 2 - Prob. 2.32PCh. 2 - Prob. 2.33PCh. 2 - Prob. 2.34PCh. 2 - In order to increase the operating temperature of...Ch. 2 - Prob. 2.36PCh. 2 - Prob. 2.37PCh. 2 - Prob. 2.38PCh. 2 - Prob. 2.39PCh. 2 - Prob. 2.40PCh. 2 - Would you expect MgO or magnesium to have the...Ch. 2 - Would you expect (Al2O3) or aluminum to have the...Ch. 2 - Prob. 2.43PCh. 2 - Prob. 2.44PCh. 2 - Steel is coated with a thin layer of ceramic to...Ch. 2 - Prob. 2.46PCh. 2 - Prob. 2.47PCh. 2 - Prob. 2.48PCh. 2 - Prob. 2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. 2.51DPCh. 2 - Turbine blades used in jet engines can be made...Ch. 2 - You want to use a material that can be used for...Ch. 2 - Prob. 2.1KP
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- 1. When Au comes into contact with Ag, it creates a solid solution that is called a substitutional solid solution. Calculate the amount of Au atoms per cubic centimeter in an Ag–Au alloy with 10% Au and 90% Ag. Pure Au has a density of 19.32 g/cm3 and pure Ag has a density of 10.49 g/cm3. 2. What is the atomic radius of nickel (in A) if it follows an FCC crystal structure, given that Nickel has a density of 8.9 g/mL and an atomic weight of 58.7 g/mol. 3. If 25 grains per square inch are measured at 100x magnification, what is the ASTM grain size number of the metal specimen?arrow_forwardYou are given the density of a metal as 3.03 g/cm³. You are advised the crystallographic structure is fcc, and the atomic mass is 28.1 g/mol. What is the atomic radius of the metal? O a. 0.14 nm O b. 0.10 nm O c. 0.11 nm O d. 0.16 nmarrow_forwardConsider two hypothetical metallic crystal structures A and B. A has an fcc and B a bcc lattice structure. Both have the same unit cell volume. The Atomic Packing Factor for A is 0.740 and that for B is 0.680. What is the ratio of the fcc to bcc atomic radii? (This question has only one correct answer) a. 0.82 b. 0.63 c. 0.92 d. 0.44 e. 1.21 Clear my choicearrow_forward
- Rhodium (Rh) has the Face-Centered Cubic (FCC) crystal structure. The atomic radius of Rhodium is r = 0.134 nm at room temperature (20°C). Calculate the edge length “a” of the unit cell  Select one: a. 0.612 b. 0.488 c. 0.379 d. 0.233 e. 0.428arrow_forwardQuestion-6 Gold has a lattice constant of 0.40788 nm. Calculate a value for the atomic radius of a gold atom in nanometers. Compare this value with the standard atomic radius of gold. Question-7 Calculate the volume in cubic nanometers of the titanium crystal structure unit cell. Lattice constants for titanium at 20°C are a 0.29504 nm and c 0.46833 nm.arrow_forwardConsider two hypothetical metallic crystal structures A and b has an fcc and B a bcc lattice structure. Both have the same unit cell volume. The atomic packing factor for a is 0.740 and that for b is 0.680. what is the ratio of the fcc to bcc atomic radii? Select one of the answers below. a. 0.63 b. 0.82 c. 1.21 d. 0.92 e. 0.44arrow_forward
- b. Given that Na = 6.022x1023 atoms/mol. Calculate the theoretical density of nickel. Show your calculations.arrow_forward1. Calculate the number of iron atoms in a 1000kg of iron. 2. Calculate the volume in a cubic centi meters occupied by one mole of boron.arrow_forwardVanadium (V) has a BCC crystal structure. The atomic radius is R = 0.132 nm and the atomic mass is M = 50.94 g/mole. What is the density of Vanadium in g/mm3? Given: Avogadro’s Number NA = 0.6023 × 1024 (atoms/mole) Select one: a. 1.5 b. 0.021 c. 0.011 d. 0.0087 e. 0.00597arrow_forward
- Sodium chloride (NaCl) has the rock salt crystal structure and a density of 2.17 g/cm³. The atomic weights of sodium and chlorine are 22.99 g/mol and 35.45 g/mol, respectively. (a) Determine the unit cell edge length. nm (b) Determine the unit cell edge length from the radii in the table below assuming that the Nat and Cl- ions just touch each other along the edges. nm Cation Mg2+ Fe2+ Na+ Ionic Radius (nm) 0.072 0.077 0.102 Anion Ionic Radius (nm) CI- 0²- 0.181 0.140arrow_forwardOut of every 1000 Tera atoms in pure Si, 28 atoms provide a free electron at room temperature. (1) What is the fraction (to 2 significant figures or will be marked wrong) of Si atoms that produce a conduction electron? (2) What is n, the density of conduction electrons? Answer must be to 2 significant figures or will be marked wrong. [1/m^3] Ne earrow_forwardCompute the composition, in atom percent, of an alloy that contains 45.2 kg copper, 46.3 kg zinc, and 0.95 kg lead?arrow_forward
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