5. In FCC gold, with a lattice parameter equal to 0.408nm, the equilibrium vacancies concentration is 7.81018 vacancies /cm3 at 1000C. Calculate the temperature at which a gold sample would have to be in.order. for the number of vacancies to be 12 orders of magnitude less. Boltzman's constant is 8.62105eV/K atoms. b) What would happen if the number of vacancies is increased by 5 percent of the initial value? (10 points)