Question

What is the SI unit of relative density

Answer 1

Hi Friend....Ur Answer is :-
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So, it is a dimensionless quantity and has no unit. Relative density is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water..
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Answer 2

There are no units for relative density.

About Relative density:

• Relative density, also known as specific gravity, is the ratio of a substance's density (mass per unit volume) to the density of a reference material.
• For liquids, specific gravity is almost commonly calculated using the densest water (at 4 °C or 39.2 °F); for gases, the reference is air at ambient temperature (20 °C or 68 °F).
• The term "relative density" is commonly used in scientific circles.
• A material's relative density is less than one if it is less dense than the reference, and greater than one if it is denser.
• If the relative density is exactly 1, the densities are identical; that is, equal volumes of the two substances have the same mass.
• If the reference material is water, a substance with a relative density (or specific gravity) less than 1 will float.
• An ice cube with a relative density of 0.91, for example, will float.
• If the relative density of a material is greater than one, it sinks.

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