On 05/09/2017 10:36 AM, Neon John wrote:
....

Mine IS the voice of experience speaking.
.....

Well, my ChE skoolin' tells me for these values it will be small.

But, with http://www.webqc.org/van_der_waals_gas_law.html @70F, 1 cf
enough N for about 2 atm yields P ~ 172580 Pa (~1.7 atm) while ideal gas
law for same is 173436 or about 0.5% difference.

Will have to get _very_ high pressures to make difference of any
significance and the point here isn't @ operating pressure but just a
measure of physical volume. In fact to get around 5%, took overall P~80
atm.

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