6. Use the calibration data for the GPC and the GPC trace for a polystyrene sample to obtain the number-average, weight-average and z-average molecular weight. The solvent is toluene and temperature used is 25C. Plot height versus molecular weight (which is related to Viet) and label M., M, and M.(25 pts) Calibration Data Retention Vol Mol. Wt (g/mol) (mL) 44.0 160K 50.1 90K 53.5 65K 60.1 35K 66 20K GPC Trace Retention Volume (mL) 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 Height (mm) 0 1 4 8 17 26 26 22 18 12 8 5 2 0 0 You should use Excel or another spreadsheet software to do the calculation