posted by Lena .
Balance the following chemical equation (put the coefficients in order)
Fe + O2 + H2O → Fe(OH)
2Fe + (1/2)O2 + 1H2O → 2Fe(OH)
when you do a balanced equation the one with the smallest coefficients are almost always best. A way to do these types of equations is to start with balancing the oxygens first then the others, then its just trail and error.