g Estimate the total number of atomic sites in your pan N (the atomic mass of aluminum is 26.982 g/mol). (b) Assuming the energy for vacancy formation Qv is 0.75 eV/atom, estimate the total number of vacancies Nv at room temperature and at cookie-baking temperature. Calculate the percent change. (c) Sketch by hand the general relationship of Nv vs. temperature on a linear scale.