Scale Tank

two 100# weights are suspended by two separate scales 100# per scale, if you put one weight in a tank full of?

oil and the other one in a tank full of alcohol which one would weigh more?

The more dense the fluid, the "lighter" is a body in that
fluid. That's why it's perceptably easier to float/swim in
the Great Salt lake than it is to swim in a fresh lake.

Taken to an extreme, if you compare "submerging" something
in a gas (like air), it's a lot heavier than if it is
submerged in a liquid (like water).

So the weight in the more dense fluid will weigh less.

Oils vary in density, but many fit in the .9 g/cm^3 range
(see reference #1). Alcohols seem to cluster in the
.79 g/cm^3 range (see reference #2).

So the weight in the alcohol would weigh more (since oil is
slightly more dense than alcohol).

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