Hartismere School

An outstanding coeducational secondary school and sixth form college

Mole day

Q/ How many carbon atoms are there in 12 grams of soot or 23 grams of sodium metal ? 

A/ An enormous number : 602000000000000000000000 of carbon atoms

.............or Avogadro's number !!

It might not sound that useful ..... yet..... but you're probably more familiar with it than you thought.