Asked by Supriya
1. The eleent gold, Au, has a face-centered cubic structure. (Density - 19.3 g/cm^3)
(a) What are the # of gold atoms in 1 unit cell?
(b) What are the # of unit cells in 1 mol?
(c) What is the volume of 1 mol gold unit cells?
(d) What is the volume of 1 unit cell?
(e) what is the length of 1 side of a unit cell?
(f) What is the metallic diameter of 1 atom?
(a) What are the # of gold atoms in 1 unit cell?
(b) What are the # of unit cells in 1 mol?
(c) What is the volume of 1 mol gold unit cells?
(d) What is the volume of 1 unit cell?
(e) what is the length of 1 side of a unit cell?
(f) What is the metallic diameter of 1 atom?
Answers
Answered by
DrBob222
a. 4
b. There are 6.022E23 unit cells in 1 mol units cells.
c. volume = mass/density = 4*196.67/19.3 = ?
d. c/6.022E23 = ?
e. volume = a^3. Solve for a.
f. 4*radius = a*(2)^1/2. You want the diameter so that will be 2*r.
My answer is about 1.44E-8 cm for r or about 2.88E-8 cm for diameter but check my work.
b. There are 6.022E23 unit cells in 1 mol units cells.
c. volume = mass/density = 4*196.67/19.3 = ?
d. c/6.022E23 = ?
e. volume = a^3. Solve for a.
f. 4*radius = a*(2)^1/2. You want the diameter so that will be 2*r.
My answer is about 1.44E-8 cm for r or about 2.88E-8 cm for diameter but check my work.
Answered by
Nikki
So what would the units for (c) be?
And, what's the radius to work out (f)?
And, what's the radius to work out (f)?
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