3 glass bulbs, each filled with water, mercury and ethanol
respectively are placed in a hot water bath. The liquid in each
glass bulb is at the same level at the start. What is the correct
level of the 3 liquids after hot water bath is heated for 15
minutes? (Estimate)
Are the liquids at same level? Initially I thought ethanol would
be at lowest level followed by water and mercury (according to
their boiling points). But after much thinking, it is weird to say
ethanol is at highest level because it will soon boil right?
(leaving less ethanol in the glass bulb) Even if I state the
position the opposite way round, it's still funny because how can
the mercury level suddenly increase?(if yes, you're actually saying
there are more volume of mercury in the glass bulb)
Or is it that all levels of liquids decrease?
Pretty curious about this question. Can someone explain?
Thanks.
