2006-09-01 09:12:51 · 3 answers · asked by brad l 2 in Science & Mathematics ➔ Chemistry
In air at standard sea level temperature and pressure, about 1.2 ounces. With a molecular weight (MW) of 29, air weighs 29 g per 22.4 liters, while hydrogen with a MW of 2 weighs 2 g per 22.4 liters, so the lift force of hydrogen is 27 g per 22.4 liters. A cubic foot is 28.317 liters, so the lift force of 1 ft^3 hydrogen is 34.132 g or 1.204 oz.
2006-09-01 09:22:12 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋
Archimedes Princple:
Fb = dens*vol*grav
Once you know Fb, just do a force balance on the balloon or whatever is holding the hydrogen to determine the amount of lifting force it has.
2006-09-01 10:10:10 · answer #2 · answered by Duluth06ChE 3 · 0⤊ 0⤋
It is like floating a boat ,all depends on the amount of air displaced minus the weight of the hydrogen
2006-09-01 09:31:29 · answer #3 · answered by JOHNNIE B 7 · 0⤊ 0⤋