Kennethdiazxviz Kennethdiazxviz Chemistry Answered B. Balancing chemical equations Directions: Balance the following chemical equations. 1. CaCO3 (s) → CaO(s) + CO2 2. CO(g) + O2(g) → CO2 (g) 3. C6H6 (l) + O2 (g) → CO2 (g) + H2O(l)4. Mg(s) + AlCl2 (aq) → Al (s) + MgCl2(aq)