Question

the density of brass is 8.4g cm-3.what do you mean by this statement???

Answer 1

Density of a substance is defined as mass per unit volume.
∴ Density=mass/volume
or
d=m/v
The density of body is the amount of matter it contains for each unit of its volume.
When we say density of brass is 8.4gm/cm³ , it means that 1cm³ of brass has a mass of 8.4g.

Answer 2

the density of brass =8.4g cm-3
We know that,
density = mass / volume
here, this statement means that if there is 1cm-3 volume of brass then its mass will be 8.4g as the density of brass is 8.4g cm-3