Density = mass ÷ volume — how much mass is packed into a volume. Units kg/m³ (or g/cm³).
How to do it — step by step
density = mass ÷ volume.
ρ = m ÷ V. (Rearrange: mass = density × volume.)
Worked example
300 g of liquid fills 250 cm³.
ρ = 300 ÷ 250 = 1.2 g/cm³
Now practise it — free
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