[lylos]

There's a question on one of my pre-lab worksheets for a Chemistry lab.  The question states:

Give two examples of how you calculate the density of a solid, and two examples of how you calculate the density of a liquid.

Now, the only imaginable way I can come across is by find volume, then mass and using rho=m/v.  And for the liquid, doing the same thing...  So I understand one method of each, but the other method eludes me.

[Custos]

A common instrument for the direct measurement of the density of a liquid is the hydrometer. A device for measuring the absolute density of a solid is a gas pycnometer. Google them for more info.

[Borek]

A common instrument for the direct measurement of the density of a liquid is the hydrometer. A device for measuring the absolute density of a solid is a gas pycnometer. Google them for more info.

Unless I am missing something that's measuring, not calculating.

I have no idea what the question asks about