...Avogadro's number (The Mole)

Today we learned about an ingenious man named Avogadro and his discovery of  the mole.

Avogadro proposed that the number of atoms in 12g of carbon is equal to a constant (this is equal to 1 mole of carbon). One mole contains 6.02e23 atoms meaning 12g of carbon contains exactly 6.02e23 atoms. The mole is a number scientists use to measure how many atoms are in a formula or single element. Basically a mole is used the same way we use the word dozen to measure how many eggs there are in a container.

example: a bottle of nitrogen contains 150g of the compound. How many moles of nitrogen are there?
150g(N) x 1mol =10.7mol
                  14g