氫氣密度為0.085KG/M^3
空氣密度為1.2255KG/M^3

1.2255-0.085=1.1405 KG/M^3
=>1140.5 G/M^3
=>1140.5 G/(100cm)^3
=>1140.5g/1000000cm^3
=>0.0011405g/cm^3

1CC=1CM^3

1000CC的氫氣..浮力是1.1405 g,

也就是每1000cc提供約1g的浮力