In pure copper, the fraction of the total lattice site that are vacant at 500 degrees is found to be 1.4x10-6. Determine the equilibrium number of vacancies per cubic meter in pure copper at 600 degrees. [Given: Copper is FCC with 4 atoms per unit cell and a lattice parameter a = 0.36151 nm. The value of Boltzmann’s constant is 8.62x10-5 eV/K]

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