4Fe + 3O2 --> 2Fe2O3
That is a question you NEVER EVER need to ask. Why? Because you can count. Here is how.
I see 4 Fe on the left side. I see 2 x 2 = 4 Fe on the right side.
I see 3 x 2 = 6 O atoms on the left side. I see 2 x 3 = 6 O atoms on the right side. Of course it's balanced. Technically, since this is a redox reaction, it must be balanced by electron change also. MOST OF THE TIME, BUT NOT ALWAYS, if you balance the atoms the rest will take care of itself.
is 4Fe + 3O2 --> 2Fe2O3 balanced?
2 answers
thx bro i need that for a math question