QUESTION $3.[]5$

We use energy to heat scrap metal from $25C.$ For every $5C$ we require $260$ Joules. To what temperature can we raise the scrap temperature if we use the heat of the following system? $Ca{C}_2$ is used with $CO$ to produce CaO and $C{O}_2.$ In the stockpile we have $1200$ kgCaC$2$ available of which due to time restrictions we can only use $760kg.$ Given: $H_{\text{C}\text{a}\text{l}\text{c}\text{i}\text{u}\text{m}\text{c}\text{a}\text{r}\text{b}\text{i}\text{d}\text{e}}=-55950Jmo{l}^{-1}{H}_{\text{d}\text{e}\text{p}}=-112542Jmo{l}^{-1},H_{\text{c}\text{a}\text{r}\text{b}\text{o}\text{n}\text{d}\text{i}\text{o}\text{x}\text{i}\text{d}\text{e}}=-390120Jmo{l}^{-1}{H}_{ee}=-21000Jmo{l}^{-1}$ respectively. $M_{Ca}=40M_C=12$ and $M_{\text{o}\text{x}\text{y}\text{g}\text{e}\text{n}}=32gmo{l}^{-1}.$