what are two different measures of density
Thus, density has the unit grams/milliter (g/ml) or grams/cubic centimenters (g/cc). The literature values are usually given in this unit. Density may be calculated from a separate mass and volume measurement, or, in the case of liquids, may be determined directly by the use of an instrument called hydrometer. Volume measurements for liquids or gases are made using a graduated containers, for example, a graduated cylinder.