Q12: Copper has 1.09 x 10¹ vacancies/cm' at equilibrium at 900 K. What fraction ofatomic sites are vacant at 1150 "K? Assume the density of the copper is 8.96 g/cm²and the atomic weight is 63.54 g/mol. The gas constant is 8.314 J/mol-K andAvogadro number is 6.022 x 10 aroma.l.

Given: Number of vacancies is N=1.09×1011vacancies/cm3

Answered: 2: Copper has 1.09 x 10 vacancies…

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Advanced Physics

2: Copper has 1.09 x 10 vacancies yacant at 1150 "K

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Question

Q12: Copper has 1.09 x 10¹ vacancies/cm' at equilibrium at 900 K. What fraction of
atomic sites are vacant at 1150 "K? Assume the density of the copper is 8.96 g/cm²
and the atomic weight is 63.54 g/mol. The gas constant is 8.314 J/mol-K and
Avogadro number is 6.022 x 10 aroma.l.

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