Determine the $C{O}_2$ emission factor $(k\frac{g}{k}Whr)$ from a power plant using coal as fuel. The

characteristic of the coal is as below:

$($Ans: $0\mathrm{.}66k\frac{g}{k}Whr)$

$($Hint: determine first the mass of fuel required to generate the energy of $1$ kWhr and then write the

stoichiometric combustion equation of coal to determine the percentage of $C{O}_2$ in the exhaust gas$).$