Material or Substance:
Volume:
Unit of Weight (Mass):

Mass of Substance = Volume of Substance x Density of Substance

Density of methane = 464.54 kg/m3

Density of methane in ounce/cubic(metre) = 16386.183960000002

Mass of a Substance = 16386.183960000002 x 19

19 cubic(metre) of methane weighs 311337.49524 ounce