The GoodYear blimp is kept aloft by helium gas which fills a volume of 4559m^3. It can carry a maximum load of 1176kg. How much more mass could the blimp carry if it were filled with hydrogen? Take the density of helium gas to be 0.160kg/m^3 and that of hydrogen to be 0.081kg/m^3

Answer 1

The mass saved by using H2 could be put into cargo, so just figure the difference in mass between He and H2 for the volume involved:

4559(.160-.081) = 360kg

so, it could lift 1176+360 = 1536 kg