(b) Calculate the number of Frenkel defects per cubic meter in silver chloride at 25 C. The energy for defect formation is 1.00 ev and the density of silver chloride is 5.56 g/cm Note that the formation energy of a Frenkel defect includes the formation of two defects, a vacancy and an interstitial, and is set in relation to the thermal energy of two defects (2kT).