[LabRat01]

If I have a sealed container of pure liquid of volume 1m3, which is 99% full, how would I calculate the amount of liquid in the gas phase given the boiling point/vapour pressure of the liquid and the surrounding temperature. (assuming the liquid/gas has had a virtually infinate amount of time to equilibriate)

I'm just looking for a ball-park figure.

Is this even a chemistry problem?  


The liquid in question is dichloromethane which has a vapour pressure of 47 kPa at 20 °C.

[Yggdrasil]

This is essentially an ideal gas law question.  What is the volume of gas in the container, what is its pressure, and what is it's temperature?