5. (12 points) Give the oxidation number of the metal atom in each of the following. You must show work to receive full credit a. Feo) b. CIO, c. Pb, d. (NH4)2CrO e. Mo, f. Cos 6. (12 points) For the unbalanced reaction, Cr, - Fe C + Fel.give: The symbol for the atom that undergoes oxidation. The chemical formula for the reactant that contains that atom. _The symbol for the atom that undergoes reduction The chemical formula for the reactant that contains that atom. Based on your previous answers is the oxidizing agent is the reducing agent 7. 16 points) Mark with an X the reaction(s) that is/are oxidation-reduction reactions. NO; + MOO NO, MnO Zn + 2 HCI H+ZACI Cdcl + 2NaOH CdOH)2 + 2 NOCI 1-12