How could you increase the rate at which 20L of water evaporates at 100oC in a …

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How could you increase the rate at which 20L of water evaporates at 100oC in a pot on the stove?

Add salt to the water

Move to a lower elevation with a higher atmospheric pressure

Use a wider saucepan instead of a narrow pot

Increase the temperature of the air surrounding the pot on the stove

Stop watching it

I don't know

The meniscus in a mercury thermometer points up. Ethanol in a graduated cylinder has meniscus that points down.  This is explained by

A very light bug is able to walk on water even though it has higher density than the water.  The property of water which explains this phenomena is 

Rationalize the boiling points of the following compounds
Ethane (CH3CH3) bp = −88∘C-88^\circ C−88∘C
Ethanol (CH3CH2OH) bp = 78∘C78^\circ C78∘C