2. Calculate the concentration of vacancies in copper at room temperature(25C) 2 What temperature will be needed to heat treat copper such that the concentration of vacancies produced will be 1000 times more than the equilibrium concentration of vacancies at room temperature? Assume that 20,000 cal are required to produce a mole of vacancies in copper Solution o The lattice parameter of FCC copper is 0. 3615Inm 4 atoms/cell 2=8.47x10 copper atom/cm (36151×10cm)2.  Calculate the concentration of vacancies in copper at room temperature (25℃).  What temperature will be needed to heat treat copper such that the concentration of vacancies produced will be 1000 times more than the equilibrium concentration of vacancies at room temperature? Assume that 20,000 cal are required to produce a mole of vacancies in copper.  The lattice parameter of FCC copper is 0.36151nm. 22 3 8 3 8.47 10 copper atom/cm (3.6151 10 cm) 4 atoms/ cell     v  N