cryogenic level calculations

[porky]

this is an off subject question, but Im sure ur a bunch of clever chaps and wouldn´t mind helping

how can I calculate the denisty of liquid oxigen \ nitrogen or argon at a known pressure, and temperature... could anyone help....

 

[randylud]

ρ = m / V

where, in SI units:

ρ (rho) is the density of the substance, measured in kg·m-3 m is the mass of the substance, measured in kg, V is the volume of the substance, measured in m3

Helpful?

 

[MichaelG]

maybe you need to use the "ideal gas law" and partial pressures

have a look at and tell us if it helps http://www.molecularsoft.com/help/Gas_Laws-Ideal_Gas_with_Density.htm

 

[Mark_H]

I would think that the density of the liquid would stay rather constant.