Question

What is the measurement of how much mass of a substance is contained in a unit of volume?

Answer 1

You speak of `"density"`, `"mass per unit volume........"`

Explanation:

We define `"density"`, `rho`, by the relationship:

`rho="Mass"/"Volume"`.

Typically (for chemists) `rho` has units `g*mL^-1` or `g*cm^-3`.

`=` `g*cm^-3` `=` `g*(10^-2m)^-3`

`=` `g*10^6*m^-3`

`=` `cancelgxx10^-3*kg*cancel(g^-1)xx10^6*m^-3=10^3*kg*m^-3`