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NSS
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Compress H2 to equal density of "Air"

11/15/2011 4:39 PM

Compress H2 to equal density of "Air"

What PSI would you need to compress H2, to make it have the same density of "Air" at sea level?

1 cuft of H2 = 1 cuft of "Air"
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Tornado
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#1

Re: Compress H2 to equal density of "Air"

11/15/2011 6:08 PM

Air has an average molecular weight of 29; H2 is 2.
14.69 psia x 29/2 ≈ 213 psia ≈ 198.3 psig.

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NSS
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#2
In reply to #1

Re: Compress H2 to equal density of "Air"

11/15/2011 6:15 PM

Wow I wouldn;'t have thought it was that high
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Codemaster
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#3
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Re: Compress H2 to equal density of "Air"

11/16/2011 7:11 AM

Why not? It's only 2/29 of the density of air at same T & P. It's not the sort of thing I'd have a gut feeling about, I'd work it out as #1.

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