Density is equal to mass over volume occupied of an object. Given the density of the liquid which is 1.11 g/ml. To get the mass of the liquid given also the volume, we substitute: mass= volume * density. Hence in 1) the mass is 427.35 ml. In 2) the given is equivalent to 3430 g. Hence, the volume asked in 2) is 3090.09 ml.
