To calculate the density of solid sodium chloride, we can use the formula:Density = Mass / VolumeGiven the mass of sodium chloride is 5.50 g and its volume is 2.50 cm, we can plug these values into the formula:Density = 5.50 g / 2.50 cmDensity = 2.20 g/cmThe density of solid sodium chloride is 2.20 g/cm.