Re: gasoline
Non ethanol gasoline is saturated with water. All the gasoline storage tanks in a refinery have floating roofs and water drains. The floating roof is to minimize evaporation vapor emissions.
But water is a polar(meaning it has an electrical charge on it) molecule and gasoline isn't(being mostly paraffins and aromatics) so there is not much water dissolved in gasoline. BTW ethanol is also a charged molecule(not as charges as water however) which is why water dissolves in it.
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