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.
Density is the measurement of the amount of mass per unit of volume. In order to calculate density, you need to know the mass and volume of the item. The mass is usually the easy part while volume can be tricky. Simple shaped objects are usually given in homework problems such as as a cube, brick or sphere. The formula for density is: density = mass/volume.