Complete this table for $\mathrm{H}_{2} \mathrm{O}$
$$
\begin{array}{lccl}
\hline T,{ }^{\circ} \mathrm{F} & P \text { , psia } & u \text { , Btu/lbm } & \text { Phase description } \\
\hline 300 & & 782 & \\
& 40 & & \text { Saturated liquid } \\
500 & 120 & & \\
400 & 400 & &
\end{array}
$$