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OK you can make some thing float with helium ok i have a rocket i need to float how much helium will it take to float an object say per gm?
the baloon has a volume of 28295.8367 cm^3 how much will it float?
- Ellison (age 16)
According to the paragraph on helium in my CRC Handbook of Chemistry
and Physics, 1000 cubic feet of helium in a balloon (presumably not
under huge pressure, but around one atmosphere) will lift 68.5 pounds
at sea level. Your balloon has a volume very close to one cubic foot,
so it can exert a lifting force of 0.0685 pounds or about 1.1 ounces,
minus the weight of the balloon material.
(republished on 07/30/06)
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