I dont need tge anser, i just want to kno how to solve the questions. im a little confused

Lab time M Tu Th. 1. Use the following chromatogram to qualitatively determine the composition of the unknown. Note: the solvent front is nnti ehmualitatively detectine the compostion of the Cations present; 2. Use the following chromatogram and a centimeter ruler to calculate R, values for each of the metal cations and the unknown. Note the solvent front drawn along the top. Show a sample Rf calculation. Base all answers upon proper measuring techniques (P1516) and significant digits. Rf Identity of unknown