It's a question of definition. Gasoline is NOT hygrosacopic by itself,
which does NOT mean that a little water cannot dissolve in it, and
certainly doesn't mean that water condensation insode the tank cannot
occur. Sorry for the many double negatives.
Calcium chloride (solid) IS hygroscopic and will attract water until it is
dissolved in a puddle of water.
Is that sufficient illustration of the definition of hygroscopic?
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