Show the calculation of the Respiratory Quotient $(RQ)$ for fat respiration.

(N/A) The Respiratory Quotient $(RQ)$ is defined as the ratio of the volume of $CO_2$ evolved to the volume of $O_2$ consumed during respiration.
For fats (e.g., tripalmitin), the chemical equation is:
$2(C_{51}H_{98}O_6) + 145O_2 \rightarrow 102CO_2 + 98H_2O + \text{Energy}$
Using the formula: $RQ = \frac{\text{Volume of } CO_2 \text{ evolved}}{\text{Volume of } O_2 \text{ consumed}}$
$RQ = \frac{102}{145} \approx 0.7$
Since the value is less than $1$, it indicates that fats are used as respiratory substrates.