1. Calculate the adjusted retention time and retention factor for all of the compounds and input them into the table below.

2. For Peaks 5 and 6, calculate the selectivity and resolution. And using Peak 4, calculate the number of theoretical plates and the theoretical plate height.

3.Suggest (specifically) three things that could be done to increase the resolution between Peaks 5 and 6. For each suggestion, describe how the change would cause the resolution to increase.

Column: Rxi XLB,30.00m,0.25mmID,0.25m (cat.\# 13723) Carrier Gas: Helium, Constant Flow @ 1.75mL/min Average Velocity: 40.45cm/sec Outlet Pressure 14.70 psi (Atmospheric Pressure) (abs): Oven Temp: 100C to 280C@30C/min (hold 3min ) \begin{tabular}{|c|c|c|} \hline Peak & tr(min) & Peak Width (min) \\ \hline 1 & 6.16 & 0.019 \\ \hline 2 & 6.43 & 0.020 \\ \hline 3 & 6.50 & 0.021 \\ \hline 4 & 6.75 & 0.023 \\ \hline 5 & 6.84 & 0.024 \\ \hline 6 & 6.87 & 0.025 \\ \hline 7 & 7.09 & 0.026 \\ \hline \end{tabular} Column: Rxi XLB,30.00m,0.25mmID,0.25m (cat.\# 13723) Carrier Gas: Helium, Constant Flow @ 1.75mL/min Average Velocity: 40.45cm/sec Outlet Pressure 14.70 psi (Atmospheric Pressure) (abs): Oven Temp: 100C to 280C@30C/min (hold 3min ) \begin{tabular}{|c|c|c|} \hline Peak & tr(min) & Peak Width (min) \\ \hline 1 & 6.16 & 0.019 \\ \hline 2 & 6.43 & 0.020 \\ \hline 3 & 6.50 & 0.021 \\ \hline 4 & 6.75 & 0.023 \\ \hline 5 & 6.84 & 0.024 \\ \hline 6 & 6.87 & 0.025 \\ \hline 7 & 7.09 & 0.026 \\ \hline \end{tabular}