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.
Review the simple mathematical formula for calculating the density of a substance, which is density = mass over volume or d=m/v. To use this formula, you will have to know the mass and the volume of the substance. The mass refers to the gravitational pull on the substance and how much matter it contains.