Problem $2-12$ marks Antimony is obtained by heating pulverized stibnite $($Sb$\_2$S$\_3)$ with scrap iron and drawing off the molten antimony from the bottom of the reaction vessel.

Sb$\_2$S$\_3+3$ Fe$->2$ Sb$+3$ FeS

Suppose that $0\mathrm{.}6$kg of stibnite and $0\mathrm{.}25$kg of iron turnings are heated together to give $0\mathrm{.}2$kg of Sb metal. Determine: a$)$ The limiting reactant. b$)$ The percentage of excess reactant. c$)$ The degree of completion $($fraction$).$ d$)$ The percent conversion based on Sb$\_2$S$\_3.$ e$)$ The yield in kgSb produced per kgSb$\_2$S$\_3$ fed to the reactor.