\begin{aligned} &\text { B. Since }\\ &q=\operatorname{mass} \times C_{s} \times \Delta T \end{aligned} q=20.0 \mathrm{gm} \times 0.255 \frac{J}{g . c} \times\left(23.96^{\circ} \mathrm{C}-200^{\circ} \mathrm{C}\right) q=6-8.27 \times 10^{2} \text { Jules }