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Specialty Chemistry Forums => Other Sciences Question Forum => Topic started by: bg105ee056 on December 06, 2006, 02:12:10 PM

Title: about hydrogen gas.
Post by: bg105ee056 on December 06, 2006, 02:12:10 PM

How much mass of hydrogen gas would be required to lift a mass of 1 killo gram against gravity to a height of 10-12 meters.please reply soon.

Title: Re: about hydrogen gas.
Post by: Borek on December 06, 2006, 02:20:57 PM

1. Please read forum rules (http://www.chemicalforums.com/index.php?page=forumrules).

2. This question has nothing to do with Analytical chemistry.

3. This question - as worded - doesn't make sense. Please elaborate.

Title: Re: about hydrogen gas.
Post by: billnotgatez on December 07, 2006, 12:48:23 AM

http://spot.colorado.edu/~dziadeck/airship.html
http://spot.colorado.edu/~dziadeck/airship/faq.htm

Quote

What are the characteristics of helium?

"Helium is next to hydrogen in density, being about one-seventh the weight of air. Stated another way, 1,000 cubic feet of hydrogen at 32 degrees [fahrenheit] temperture, at sea level, will lift 75.1 pounds while the same volume of helium will lift 69.6 pounds."