7. The following data were obtained by gas-liquid chromatography on a 40-cm packed column: Calculate: Compound air TR, min W, min 1.9 A methylcyclohexane 10.0 0.76 B methylcyclohexene 10.9 C toluene 0.82 13.4 1.06 a. the number of plates for each peak b. the average number of plates C. an average plate height for the column d. the resolution for methylcyclohexane and toluene e. if a resolution of 1.5 was desired in resolving methylcyclohexane and toluene, how many plates would be required?