Question

What is different between relative density of substance and the density

Answer 1

Density is defined as mass per unit volume.

Relative density is the ratio of density of a substance to the density of water. It is also called specific gravity.

R.D. = Density of substance / Density of pure water at 4°C.

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Answer 2

Mass per unit volume of asubstance is called density. i. The ratio between density of asubstance and density of water is called relative density. ... Units:Relative density has no units because it is the ratio betweenthe similar physical quantities (density).