Mass of Substance = Volume of Substance x Density of Substance
Density of fluorine refrigerant r 12 = 1310.95 kg/m3
Density of fluorine refrigerant r 12 in gram/cup(US) = 1310950.0
Mass of a Substance = 1310950.0 x 6
6 cup(US) of fluorine refrigerant r 12 weighs 7865700.0 gram