GLYCEROPHOLIPIOS AND STERIES AIM: To investigate the physical and chemical prope

Question

GLYCEROPHOLIPIOS AND STERIES AIM: To investigate the physical and chemical properties of same conman lipids, as well as isolate lecithin and cholesterol from York. Procedure: please refer to autumnal CN m 1204 page 41, 42 Results: A. Isolation of cholesterol from egg York. Mass of beaker and egg York = 12.5 g Mass of beaker = 10 g Mass of Erlenmeyer = 43.5 g Mass of flask of cholesterol = 43.45 g Color and appearance of cholesterol: orange precipitate Calculate the mass of egg York. Calculate the mass of cholesterol in egg York. determine the percent by mass of cholesterol in egg York. B. ISOLATION of Lecithin from egg York. Mass of beaker = 75.3 g Mass of beaker and lecithin = 79.38 g Color and appearance of lecithin = Mass of lecithin = 4.08 g Mass % lecithin = mass of lecithin/mass of egg York x 100 = 4.08/15.5 x 100 = 26.32

Explanation / Answer

Mass of the eclenmayer flask is 43.5 g

Mass of the flask and cholastral is 43.45 g

So that cholastral wt is goes nagetive value, mass value does not shows always in nagetive

there fore the experiment was not perfomed well .

the above observations wrong.

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