Water is boiling in an open iron pot sitting on a stove with a temperature of 
. The pot has a bottom with an area of 
and a thickness of 
. It receives heat from the stove only through the bottom.
How much water evaporates in 5 minutes?
How much water would evaporate in 5 minutes if the bottom of the container was coated with a 3 mm protective coating with thermal conductivity 
