Question

what is relative density

Answer 1

Hey there !

Relative density is the ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas.

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Answer 2

Relative density (RD) is the ratio of the density of a substance to the density of water. It is also known as specific gravity(SG). Because it is a ratio, relative density or specific gravity is a unitless value. If its value is less than 1, then the substance is less dense than water and would float. If relative density is exactly 1, the density is the same as water. If RD is greater than 1, the density is greater than that of water and the substance would sink.

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