Question: 185 Ux = 190 k = Time (min) 18 Separation of isotopic molecules on a 440-cm-long monolithic Cg-silica column eluted with CH, CN/HO (30:70 vol/vol)

185 Ux = 190 k = Time (min) 18 Separation of isotopic molecules on a 440-cm-long monolithic Cg-silica column eluted with CH, CN/HO (30:70 vol/vol) at 30C. [Data from K. Miyamoto, T. Hara, H. Kobayashi, H. Morisaka, D. Tokuda, K. Horie, K. Koduki, S. Makino, O. Nez, C. Yang, T. Kawabe, T. Ikegami, H. Takubo, Y. Ishihama, and N. Tanaka, "High- Efficiency Liquid Chromatographic Separation Utilizing Long Monolithic Silica Capillary Columns," Anal. Chem. 2008, 80, 8741.] Unretained thiourea is eluted in 41.7 min. Find the linear velocity ux (mm/s). 195 Find the retention factor k for CL. mm/s

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