Tip: Chemical formula is case delicate: C10H16N2O2 c10h16n2o2 Directions to determine molar mass (molecular excess weight) of the chemical compound:Lipids are typically categorized as lipoids (phospholipid, cholesterol and cholesterol ester, and so forth.) and fats (triglycerides, TG). Lipoids are essential for a number of cellular functions, inclu