What is the pH of a solution containing a hydrogen ion concentration of 1.0 x 10-3 M?What is the oxidizing agent and reducing agent in the following reaction: (1 point) Fe2O3(s)+3C(s)→4Fe(s)+3CO2(g) Assign the oxidation numbers of the atoms in the following compounds. (1 point) (a) FeBr3 4. Write the anode and cathode reactions for a galvanic cell that utilizes the reaction: (2 points) Al(s)+Cu2+(aq)→Al3+(aq)+Cu(s) I need help with these questions