What is the retardation factor, \( R_F \), of compound X according to a paper chromatogram where the origin is 10mm from the bottom edge, compound X has moved 21mm from the origin, and the solvent front has moved an additional 7mm past compound X?
What is the retardation factor, \( R_F \), of compound X according to a paper chromatogram where the origin is 10mm from the bottom edge, compound X has moved 21mm from the origin, and the solvent front has moved an additional 7mm past compound X?