Question 1 (Mandatory) (4 points) According to the phase diagram below the solid and liquid phases exist in equilibrium along line Pressure (atm) A) AD B) CB C) CD D) AB 1.0 0.7 D 15.0 30.0 Temperature (°C) 45.0 How many atoms are contained in a face centered cubic cell? Look at the picture to help your reasoning A) There are 14 atoms B) There are 8 corner atoms (only of each atom belongs to the cell) and 4 atoms on each of the faces of the cube (only of each atom belongs to the cell). Thus there is a total of 8x+4x=3 atoms. C) There are 8 corner atoms but only of each atom belongs to the cell and then there are 6 atoms on each face of the cube. There is a total of 8x+ 6-7 atoms D) There are 8 corner atoms (only 1 over 8 of each atom belongs to the cell) and 6 atoms on each of the faces of the cube (only 1 half of each atom belongs to the cell). Thus there is a total of 8 x 1 over 8+6x1 half = 4 atoms.

Chemistry
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Chapter10: Liquids And Solids
Section: Chapter Questions
Problem 5RQ: What is a lattice? What is a unit cell? Describe a simple cubic unit cell. How many net atoms are...
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Question 1 (Mandatory) (4 points)
According to the phase diagram below the solid and liquid phases exist in equilibrium along line
Pressure (atm)
A) AD
B) CB
C) CD
D) AB
1.0
0.7
D
15.0
30.0
Temperature (°C)
45.0
How many atoms are contained in a face centered cubic cell? Look at the picture to
help your reasoning
A) There are 14 atoms
B) There are 8 corner atoms (only of each atom belongs to the cell) and 4
atoms on each of the faces of the cube (only of each atom belongs to the
cell). Thus there is a total of 8x+4x=3 atoms.
C) There are 8 corner atoms but only of each atom belongs to the cell and
then there are 6 atoms on each face of the cube. There is a total of 8x+
6-7 atoms
D) There are 8 corner atoms (only 1 over 8 of each atom belongs to the cell)
and 6 atoms on each of the faces of the cube (only 1 half of each atom
belongs to the cell). Thus there is a total of 8 x 1 over 8+6x1 half = 4
atoms.
Transcribed Image Text:Question 1 (Mandatory) (4 points) According to the phase diagram below the solid and liquid phases exist in equilibrium along line Pressure (atm) A) AD B) CB C) CD D) AB 1.0 0.7 D 15.0 30.0 Temperature (°C) 45.0 How many atoms are contained in a face centered cubic cell? Look at the picture to help your reasoning A) There are 14 atoms B) There are 8 corner atoms (only of each atom belongs to the cell) and 4 atoms on each of the faces of the cube (only of each atom belongs to the cell). Thus there is a total of 8x+4x=3 atoms. C) There are 8 corner atoms but only of each atom belongs to the cell and then there are 6 atoms on each face of the cube. There is a total of 8x+ 6-7 atoms D) There are 8 corner atoms (only 1 over 8 of each atom belongs to the cell) and 6 atoms on each of the faces of the cube (only 1 half of each atom belongs to the cell). Thus there is a total of 8 x 1 over 8+6x1 half = 4 atoms.
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