The 1st image is my data. The 2nd image is my post lab. I just want to know how to determine the freezing point depression of mixtures (Trial 3 and 4) and the molality of solution (moles solute/kg solvent). The info thats highlighted purple or around the highlighted area is important. Please write neat and explain. Thank you (:

\& Nate: Tube A (Vsed for both Trial 34 ) Preweish =19.88g Tube AW/SA=28.8/35 Initic) freezing Point =68.61C Post Lab DATA TABLE: i=3. Colligative properties can be used to determine the molar mass of a substance. In this experiment, you will measure the freezing point of pure stearic acid (your solvent). You will add a solu:e in the form of a weighed quantity of an unidentified fatty acid (the possible fatty acids are listed in Table 2) to the pure stearic acid