Question

during an experiment, if not all of a liquid vaporizes, in a flask with a cap with a pinhole. will the reported molecular weight be too high or low?

i was thinking too high because the liquid weighs more.

Answer 1

I need to know more about how the experiment was conducted.

Answer 2

we boiled water in a beaker and put a flask with a small amount of an unknown liquid into the flask then covered it with a lid with a pinhole in it, and we placed this flask in the boiling water bath until the liquid evaporated, then we let it cool and condense.

Answer 3

If I understand what you have done correctly, I think you are correct. The liquid will weigh more than the vapor.