If relative density is 11.3, the density of the substance in SI units is
11.3 x 103 g/cm3
11.3 x 103 kg/m3
11.3 kg/m3
11.3 g/cm3
relative density = density of material / density of water
And density of water = 103 kg/m3
(a) What is the difference between the density and relative density of a substance? (b) If the relative density of a substance is 7.1, what will be its density in SI units?