Question: how long does it take for a jug of water [the water line is 55ml] to evaperate ?

Ruth Elderfield answered on 16 Jun 2015:

That would depend on lots of different things:
How big is the jug, if it is a big jug with a wide mouth and the water in the bottom is spread out along the bottom of the jug the water would evaporate a lot faster than if the jug was small with a very small opening in the top. This is because the amount of water that evaporates off depends on how much is exposed to the air, if it is exposed to lots of air, there is lots of space for the water molecules to float upwards, if only a little of the water is exposed, the molecules behind would almost have to queue up behind each other (imagine your class running through a small door or a big wide archway, which would you get through faster?
Then there is heat, how hot is the room the jug is in? The hotter the room, the quicker the water would evaporate off. This is because the heat provides energy to the water molecules allowing them to zip around faster and breaks apart little ties (attractions) that hold them together, so they can become a gas and evaporate off faster.
Then is the jug in a drafty dry room? If so the water would evaporate faster as the wind helps whip the water molecules away. If the jug was in a damp, still room, the water molecules would have to queue again, behind the water already in the room with no wind to help it.
So it really isn’t an easy question to answer….