Why can't I seem to understand how to balance chemical equations?
___Al +___O2-----> ___ Al2O3 and I do not get how it is balanced as
4 Al + 3 O2 -----> 2 Al2O3
Where does the 4, 3, and 2 come from???
We're also going to have to write and balance chemical equations for reactions, like:
Iron metal and sulfur powder are heated in the flask producing solid iron (II) sulfide
which is Fe + S ---> FeS
I don't understand why there are no subscripts or coefficients?
Any help would be much appreciated!