Does Freezing Increase the Density of an Unknown Fluid?

[bobred]

Homework Statement

An unknown fluid is placed in a bottle and then placed in a beaker of water where it displaces x amount of water. The unknown fluid is then frozen into a block and a greater proportion of this substance is now submerged, what does this say about the change in density?

Homework Equations

The Attempt at a Solution

Am I right in thinking the density increases, there is no mention of what happens to the volume of the substance or the volume displaced?

 

[tiny-tim]

hi bobred!

well, you titled this Archimedes' Principle, how how about using the principle in your answer?

 

[Deric Boyle]

Yeah! bobred read the the statement of Archimede's principle carefully, you'll surely be able to solve then.

 

[bobred]

At equilibrium I have

$$\frac{V_0}{V}=\frac{\rho}{\rho_0}$$

what is confusing me is what happens to the unknown substance when it is frozen, does it expand or contract and therefore change the density $$\rho$$