Question

Define relative density with respect to mass of a substance.
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Answer 1

Answer:

Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. If the relative density is exactly 1 then the densities are equal; that is, equal volumes of the two substances have the same mass.

Answer 2

Relative density of a substance is the ratio of the density of that substance to the density of water. e.g., relative density of iron is 7.8 and that of silver is 10.8 Relative density of a substance tells us how many times the substance is denser than water.