The concept of the mole is, for some, very difficult to grasp, but its really quite simple. Much like a dozen, its a fixed number, which is Avogadros number. This makes it very useful to count large numbers of very small things like atoms and molecules and electrons.

After reviewing the concept of a mole, write a thoughtful, complete, but concise essay explaining how the concept of a mole was arrived at and where Avogadros number comes from