O-level Chemistry: "A gram-mole of gas occupies 22.4 litres at Standard Temperature and Pressure". The rest is arithmetic.
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If so, do you really mean 6 megalitre? That's a lot of liquid argon. Or 6 milliltre?
You need to find the density of liquid argon. I don't know offhand but I'd be surprised if it's much different from water so if you just want a rough estimate use 1000kg/m3. That gives you the mass, then use #2 to work out volume of gas at the temperature and pressure.
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Yes I know the question is about liquid. That's why I said "it's a lot of liquid argon". But what does the OP mean by kl? What did you mean by WAG: 6Ml in #3?
Also the factors you quote depend on the temp and pressure of the gas.
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