Mathematics: Which fraction does point A show? A.3/7 B.3/4 C.8/5 D.7/4

Which fraction does point A show? A.3/7 B.3/4 C.8/5

jacobbrandon2002

05.02.2023

$1.16*10^{23} vacancies/m^3$

Explanation:

Data given

temperature =700c

Density=10.35g/cm^3

but

$\frac{N_v}{N}=2*10^{-6}\\N_v=2*10^{-6}N\\$

Nv is the number of vacant site and N is the number of lattice site.

Since the number of lattice site can also b computed as

$N=\frac{p_{Ag} * N_A}{A_{AG}} \\N=\frac{6.022*10^{23} * 10.35*10^6g/m}{107.87g/mol} \\N=5.78*10^{28}atom/m^3$

if we substitute the value of the number of lattice into the first equation, we arrive at

$N_v=2*10^{-6} *5.78*10^28\\N_v=1.16*10^{23} vacancies/m^3$

0,0(0 оценок)