Attributes . Weights 100g through 10g are 7.85 g/cm3 at 20°C. Weights 5g through 1g are 2.7 g/cm3 at 20°C. Weights 500 mg through 200 mg are 7.85 g/cm3 at 20°C. Weights 100 mg and below are 2.7 g/cm3 at 20°C. . Names