Write balanced equations for the following chemical or nuclear reactions. For chemical reactions, include all phases. (a) Iron metal is oxidized to its +2 oxidation state by a reaction with aqueous hydrogen ion (ionic equation). (b) An equilibrium showing phosphate ion (PO43-) reacting with water to make a solution basic. (c) Propane gas undergoes complete combustion producing carbon dioxide gas and liquid water. (d) An aqueous acid/base reaction between ammonium ion (NH4+, the acid) and carbonate ion (CO32-, the base). (e) Nuclear reaction representing the B-decay of C