•Now
 figure out how to get the same no of atoms of each kind on both sides by using whole no coefficients in front of
 the species.
 •As       H2  + _N2  NH3, then
 •           H2  + _N2  _ NH3,  then
 •          _ H2 
 +  _N2  _ NH3
 •Now have _ H’s, _N’s on both sides and the lowest set of whole no coefficients
 have been
 used.  The equation is balanced.
 •