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29-08-2017
Physics

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Why does the oil in some salad dressings rise to the top of the bottle?

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29-08-2017

Oil is less dense than water or most liquids found in Saldana dressing, so the denser liquid sinks to the bottom, leaving the oil on top. It's same principle on how a helium balloon floats in air, the helium is less density than the air around it.

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