Please answer all three questions, thank you. The coal analyzes $13\mathrm{.}5\%VCM,74\mathrm{.}8\%FC,8\mathrm{.}5\%$ ash, $3\mathrm{.}2\%M,0\%N$ and $1\%S,$ and it has a heati

of $32\mathrm{.}96M\frac{J}{k}g.$ The following were measured during the combustion of coal in the furnace

Refuse: $5\%$ VCM$,41\%$ FC$,54\%$ ash

Air: dry, $298K,98\mathrm{.}6586$atm,$50\%$ excess

Stack gas: $573K,100\mathrm{.}658$kPa,$C\frac{O}{H_2}=4$:$1,C\frac{O_2}{C}O=10$:$1$

Calculate:

a$)\%C$ and $\%VCM$ lost in the refuse

b$)$ Orsat analysis of the stack gas

c$)m^3$ stack gas $\frac{?}{m^3}$ air