If you above the boiling point you can approach with ideal gas law to get a rough calculation.
Hi, sorry I should have said this is simply ethanol at room temperature.
So 500 litres of ethanol evaporated in a fixed space with no ventilation. Let's call it 100m3 of space. I would like to work out what % of the m3 is now ethanol vapor.
I am assuming it isn't as simple as 0.5%. i.e 500L being half a cubic meter in the 100m3 space