tia1037 tia1037 20-10-2020 Chemistry contestada Balance the following chemical equations. 1. Fe + 02 → Fe3O4 2. Sr+ 02 → Sro 3. Sn+ NaOH → Na SnO2 + H2 4. K + Br2 → KBr 5. CH3 + O2 + CO2 + H2O