8.配平下列氧化还原方程式-|||-(1) _(2)+N(H)_(3)-N(H)_(4)F+(N)_(2)-|||-(2) (V{O)_(2)}^++(H)_(2)(C)_(2)(O)_(4)cdot 2(H)_(2)O+(H)^+cdot (VO)^2++C(O)_(2)uparrow +(H)_(2)-|||-0-|||-(3) _(4)+CuS(O)_(4)+(H)_(2)O-(Cu)_(3)P+(H)_(3)P(O)_(4)+(H)_(2)S(O)_(4)