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Consider the growth of $\textit{S. cerevisiae}$ under aerobic condition in a bioreactor and the specific growth rate of yeast is $0.5\; \text{h}^{-1}.$ The overall reaction of the process is

$2\text{C}_{6}\text{H}_{12}\text{O}_{6} + 0.2\text{NH}_{3} +10.35\text{O}_{2} \rightarrow \text{CH}_{1.8}\text{O}_{0.5}\text{N}_{0.2}+ 0.2\text{C}_{2}\text{H}_{6}\text{O}+ 10.6\text{CO}_{2} + 10.8\text{H}_{2}\text{O}$

The heat of combustion values for different compounds are tabulated below with the reference to $\text{CO}_{2}, \text{H}_{2}\text{O}, \text{O}_{2}$ and $\text{N}_{2}$ at standard conditions.

$$\begin{array} {lll} \textbf{Compound} & & \textbf{Heat of combustion} \\  & & (\text{kJ mol}^{-1}) \\ \text{C}_{6} \text{H}_{12} \text{O}_{6} & & 2802 \\ \text{NH}_{3} & & 383 \\ \text{CH}_{1.8}\text{O}_{0.5} \text{N}_{0.2} & & 560 \\ \text{C}_{2} \text{H}_{6}\text{O} & & 1366\end{array}$$

The specific rate of heat production (rounded off to nearest integer) is ___________ $\text{kL mol}^{-1}\text{h}^{-1}.$
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