need help on ones highlighted red

A 100kmol/h stream that is 94 mole\% carbon tetrachloride (CCl4) and 6% carbon disulfide (CS2) is to be recovered from the bottom of a distillation column. The feed to the column is 16 mole\% CS2 and 84%CCl4, and 2.00% of the CCl4 entering the column leaves in the overhead (top of column). Draw and label a flowchart of the process and do the degree-of-freedom analysis. Calculate the mass and mole fractions of CCl4 in the overhead stream, and determine the molar flow rates of CCl4 and CS2 in the overhead and feed streams. Overhead Feed Molar flow rate CCl4 : kmol/h Molar flow rate CCl4 kmol/h Molar flow rate CS2 : kmol/h Molar flow rate CS2: kmol/h Mole fraction CCl4 : Mass fraction CCl4