Natural gas is stored in a spherical tank at a temp. of10oC. At a given initial time, the pressure in thetank is 100 kPa gage, and the atmospheric pressure is 100 kPaabsolute. Some time later, after more gas is pumped into thetank, the pressure in the tank is 200 kPa gage, and the temp. isstill 10oC. What will be the ratio of the mass of natural gas in the tank when P = 200 kPa gage to that when the pressure was 100kPa gage?