How do you calculate the red sections?

\begin{tabular}{|l|c|} \hline Mass: gelatin capsule (g) & 0.121 \\ \hline Mass: whole alka-seltzer tablet (g) & 3.256 \\ \hline Mass: capsule + alka-seltzer sample (g) & 1.070 \\ \hline Mass: test tube +HCl(aq)+ stir bar (g) & 26.130 \\ \hline Mass (after reaction): test tube +HCl(aq)+ & 27.200 \\ stir bar + capsule & 21.7 \\ \hline Temperature of CO2[g) in C & 99 \\ \hline Pressure outside (P( outside)), kPa & 159 \\ \hline mL water =mL of CO2[g) & 02 \\ \hline \end{tabular} \begin{tabular}{|l|c|} \hline Mass: gelatin capsule (g) & 0.121 \\ \hline Mass: whole alka-seltzer tablet (g) & 3.256 \\ \hline Mass: capsule + alka-seltzer sample (g) & 1.070 \\ \hline Mass: test tube +HCl(aq)+ stir bar (g) & 26.130 \\ \hline Mass (after reaction): test tube +HCl(aq)+ & 27.200 \\ stir bar + capsule & 21.7 \\ \hline Temperature of CO2[g) in C & 99 \\ \hline Pressure outside (P( outside)), kPa & 159 \\ \hline mL water =mL of CO2[g) & 02 \\ \hline \end{tabular}