The vessel is filled with liquids immiscible with each other: water, gasoline, mercury. In this case, the top will be ..

The distribution of liquids will occur depending on their value of their density. The lightest liquid, with the lowest density, will be on top. The heaviest liquid, with the highest density, will be at the bottom.
From the density table we see that
ρw = 1000 kg / m ^ 3.
ρb = 750 kg / m ^ 3.
ρp = 13600 kg / m ^ 3.
Gasoline will be on top because it has the lowest density.
The answer is gasoline.



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