What do the different colour heart emojis mean? Does a red , yellow , green , blue and violet emoji all mean the same thing according to you? Solitude4
1 The relative atomic mass, or atomic weight, of an element is the weighted average of the masses of the isotopes in the naturally occurring element relative to the mass of an atom of the carbon-12 isotope which is taken to be exactly 12.
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.Specific gravity usually means relative density with respect to water. The term relative density is often preferred in modern scientific usage.elative density (RD) or specific gravity (SG) is a dimensionless quantity, as it is the ratio of either densities or weights. where RD is relative density, Ïsubstance is the density of the substance being measured, and Ïreference is the density of the reference.