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Powder suspended in oil?

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Hi Everyone

Lets say we have a an extremely fine powder which is a water-soluble crystalline solid at room temperature. Lets say we also have an oil which is less dense than the powder in its non-powdered form. If the powder is mixed into the oil, am I correct in thinking that it will be much harder for a particle of the powder to fall through the oil than it would be for a feather to fall through the air? Will the settling of the powder at the bottom of the container be so slow as to be almost imperceptible?

Thank you very much.

Kind regards


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