PART 1 COOLING CURVE FOR CYCLOHEXANE Mass of test tube, beaker, and cyclohexane OD Mass of test tube and beaker g Mass of cyclohexane (by difference) 4:78 0.01178k g Graph showing T value 2.8.0 Freezing Point of cyclohexane (T;) PART 2 COOLING CURVE FOR CYCLOHEXANE-UNKNOWN SOLUTION Mass of unknown plus vial analytical balance) g Mass of emptied vial (analytical balance) Mass of unknown added (by difference) 6.1697: Graph showing T value: 1.5 Freezing Point of Solution (T) Freezing Point Depression (AT, = t; -T) 1.3 :3 C Table 1: Some values for Kb and Kf. Solvent Freezing Point /C Kf/C m -1 Normal Boiling Point /C Kb/C m-1 C6H6 (benzene) 5.4 5.12 80.2 2.53 H2O 0.0 1.86 100.0 0.51 C6H12 (cyclohexane) 6.6 20.4 80.7 2.76 C10H8 (naphthalene) 80.6 6.9 218 Propose a plausible structure for your unknown molecule, given that it is an aromatic compound, i.e. a derivative of benzene, CeHe