Question

Differentiate between Relative Density and Density ?

Answer 1

Answer:

Density is mass divided by volume. It is told as x gms. per cubic cms. (Or x pounds or ounces per cubic feet or cubic inches in fps system).

Relative density is comparison of density of the substance with that of water. So it is a pure no. Density of water being one gm. per cc; in cgs system; the numerical value of density and relative density is the same. The numerical value of relative density is the same in all systems.

Relative density is referred as sp. gravity.

Answer 2

Answer:

Relative Density : Relative density, or specific gravity, is the ratio of the density of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest; for gases, air at room temperature is the reference.

Relative density, or specific gravity, is the ratio of the density of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest; for gases, air at room temperature is the reference.

Density : The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: where ρ is the density, m is the mass, and V is the volume.

Density is a measure of how compact the mass in a substance or object is. The density of an object or substance can be calculated from this equation: density in kilograms per meter cubed is equal to mass in kilograms, divided by volume in meters cubed. Or in other words, density is mass spread out over a volume.