Me 1. balance the equation if necessary, for te reaction between iron and oxygen. fe + 02 -> fe203. 2. classify the reaction that occurred between the iron and oxygen. 3. what evidence was there that a reaction took place?

1) The equation is unbalanced, so it should be
3Fe+ 3O2 -> 3FeO2

2) the reaction is an oxidation reaction and a synthesis reaction because the iron and oxygen would become iron oxide.

3) The evidence that there was a chemical reaction was that the iron and oxygen combined to make iron oxide.

Hbr dissociates to form h+ and br-ca(oh)2 dissociates to form ca2+ and 2oh-the h+ and oh- react to form waterassuming the reactants are dissolved in water, the net reaction is h+ + oh- —> h2oif you’re asked to show all components of the reaction, the complete reaction is 2hbr + ca(oh)2 —> cabr2 + 2h2o