$$\begin{array} {rrcl} \textsf{Volume Flow Rate}: & Q & = & Av \quad\left(\mathsf{m^3/s}\right)\\[0.25cm] \textsf{Mass Flow Rate}: & M & = & \rho Q \quad\left(\mathsf{kg/s}\right)\\[0.25cm] \textsf{Weight Flow Rate}: & W & = & \gamma Q \quad\left(\mathsf{kN/s}\right)\\[0.5cm] \textsf{Continuity Equation}: & A_1v_1 & = & A_2v_2\\[0.5cm] \textsf{General Energy Equation}: & \frac{P_A}{\gamma}+z_A+\frac{v_A^2}{2g} & = & \frac{P_B}{\gamma}+z_B+\frac{v_B^2}{2g} \end{array}$$