Công thức tính nhiệt dung riêng trung bình:

\(c\left| {\begin{array}{*{20}{c}}{{t_1}}\\{{t_2}}\end{array}} \right. = \frac{q}{{{t_2} - {t_1}}}\)

\(c\left| {\begin{array}{*{20}{c}}{{t_1}}\\{{t_2}}\end{array}} \right. = \frac{q}{{{t_1} - {t_2}}}\)

\(c\left| {\begin{array}{*{20}{c}}{{t_1}}\\{{t_2}}\end{array}} \right. = \frac{{c\left| {\begin{array}{*{20}{c}}{{t_2}}\\0\end{array}*{t_2} - c\left| {\begin{array}{*{20}{c}}{{t_1}}\\0\end{array}*{t_1}} \right.} \right.}}{{{t_1} - {t_2}}}\)

\(c\left| {\begin{array}{*{20}{c}}{{t_1}}\\{{t_2}}\end{array}} \right. = \frac{q}{{{t_2} - {t_1}}}.c\left| {\begin{array}{*{20}{c}}{{t_1}}\\{{t_2}}\end{array}} \right. = \frac{{c\left| {\begin{array}{*{20}{c}}{{t_2}}\\0\end{array}*{t_2} - c\left| {\begin{array}{*{20}{c}}{{t_1}}\\0\end{array}*{t_1}} \right.} \right.}}{{{t_2} - {t_1}}}\)