2 MnO_4^-+ bC_2 O_4^2-+ cH^+ → x Mn^2++y CO_2+z H_2 O If the above equation is balanced with integer coefficients, the value of c is \ \ \ \. (Round…

$\displaystyle 2 \mathrm{MnO}_4^{-}+\mathrm{bC}_2 \mathrm{O}_4^{2-}+\mathrm{cH}^{+} \rightarrow x \mathrm{Mn}^{2+}+y \mathrm{CO}_2+z \mathrm{H}_2 \mathrm{O}$ If the above equation is balanced with integer coefficients, the value of c is \_\_\_\_. (Round off to the Nearest Integer).