Question Six (a) At a temperature of 25°C, the number of vacancies, N., in a cobalt metal is estimated as: N, = N, exp(- Ns (fo) where, Q, = 0.85 ev/atom; kg = 8.62 x 10-5 ev/atom. K Given that Na = 6.023 x 10" atoms/mole, and pes= 8.85 g/cm', carry out the following: i. Determine the mass of cobalt that would contain 9.04 x 102 regular lattice sites. ii. Calculate the number of vacancies in the cobalt mass determined in (i) above.

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Question Six
(a) At a temperature of 25°C, the number of vacancies, N., in a cobalt metal is estimated as:
(b,
N, = N, exp( -
kgT
(e)
where, Q, = 0.85 ev/atom; kg = 8.62 x 10-5 eV/atom. K
Given that NA = 6.023 x 10" atoms/mole, and peo = 8.85 g/cm', carry out the following:
i.
Determine the mass of cobalt that would contain 9.04 x 102? regular lattice sites.
Calc
02 i:
ii.
Calculate the number of vacancies in the cobalt mass determined in (i) above.
Transcribed Image Text:Question Six (a) At a temperature of 25°C, the number of vacancies, N., in a cobalt metal is estimated as: (b, N, = N, exp( - kgT (e) where, Q, = 0.85 ev/atom; kg = 8.62 x 10-5 eV/atom. K Given that NA = 6.023 x 10" atoms/mole, and peo = 8.85 g/cm', carry out the following: i. Determine the mass of cobalt that would contain 9.04 x 102? regular lattice sites. Calc 02 i: ii. Calculate the number of vacancies in the cobalt mass determined in (i) above.
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