Instructor: Dr. Anna Toy-pal 8. (15 pts) A solution contains a 0.250 g of an unknown...
Instructor: Dr. Anna Toy-pal 8. (15 pts) A solution contains a 0.250 g of an unknown nonvolatile nonelectrolyte dissolved in 40.0 g of CCl, as the solvent. The boiling point of the solution was 0.357 °C higher than that of the pure solvent. Given Ks - 5.02 "C/m, determine the molar mass of the unknown substance. _g/mol Molar mass unknown substance = 40.0g CCl4 molccly = 2.53 molicly! 153,81 g CCl4 ATb=ikbm kb = 502 Un 0250 g unt solute 400g CCly solvent Total 40.25g 2.5 mol 0.040254,- 62.2 0.357C=(5.ozum62m)) 0.9570 - 315.256°C 0.0113 12/3/2018