10. Calculate the energy for vacancy formation in copper, given that the equilibrium number of vacancies at 1000° C (1273 K) is 2.2 x 1025 m³. The atomic weight and density (at 1000° C) for copper are, respectively, 63.5 g/mol and 8.4 g/cm³. Where: ||||||| N₁ = Nexp P(-20 N Q. T 2. ΚΤ N = N₁ P/Ncu is the total number of atomic sites is the energy required for the formation of a vacancy is the absolute temperature in kelvins k is the gas or Boltzmann's constant 8.62 x 105 eV/atom-K. NA is Avogadro's number - 6.022 x 1023 atoms/mol is the atomic density P New is Atomic weight for copper.

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10. Calculate the energy for vacancy formation in copper, given that the equilibrium
number of vacancies at 1000° C (1273 K) is 2.2 x 1025 m³. The atomic weight and density
(at 1000° C) for copper are, respectively, 63.5 g/mol and 8.4 g/cm³.
Where:
IIIIII
-
N₁ = Nexp
exp(-X).
KT
N
Q
T
N = N₁ P/Ncu
is the total number of atomic sites.
is the energy required for the formation of a vacancy
is the absolute temperature in kelvins
k
is
the gas or Boltzmann's constant = 8.62 x 105 eV/atom-K.
NA is Avogadro's number 6.022 x 1023 atoms/mol
P
is the atomic density
New is Atomic weight for copper.
2
Transcribed Image Text:10. Calculate the energy for vacancy formation in copper, given that the equilibrium number of vacancies at 1000° C (1273 K) is 2.2 x 1025 m³. The atomic weight and density (at 1000° C) for copper are, respectively, 63.5 g/mol and 8.4 g/cm³. Where: IIIIII - N₁ = Nexp exp(-X). KT N Q T N = N₁ P/Ncu is the total number of atomic sites. is the energy required for the formation of a vacancy is the absolute temperature in kelvins k is the gas or Boltzmann's constant = 8.62 x 105 eV/atom-K. NA is Avogadro's number 6.022 x 1023 atoms/mol P is the atomic density New is Atomic weight for copper. 2
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