Sometimes the type of defects present in a material can be determined by measuring its density. Consider a 99.0 wt% NaCl-1.0 wt% MgCl2 solid solution. Given that the density of pure NaCl is 2.16 g/cm3, compute the density of this solution assuming charge balance is maintained by: (i) formation of Na+ vacancies, (ii) Mg2+ substituting with Na+ and additional Cl at interstitial sites, and (iii) Mg2+ occupying tetrahedral interstices with even more Cl interstitials forming. For the purposes of this problem, assume the lattice parameter remains unchanged from that of pure NaCl.