The equilibrium fraction of lattice sites that are vacant in an metal at 900 0C is 6.17 x 10-5. a) Calculate the number of vacancies (per meter cubed) at 900 °C. Assume g/cm3 for gold and atomic weight of 196.9 g/mol a density of 19.32 b) Calculate the energy required for vacancy formation for the same metal take k = 8.62 x 10- 5 eVlatom K

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