Erythrogenic acid, C18H26O2, is an acetylenic fatty acid that turns avivid red on exposure to light. On catalytic hydrogenation
over a palladium catalyst, 5 equivalents of H2 are absorbed, and stearic acid,CH3(CH2)16CO2H, is produced. Ozonolysis of erythrogenic acid givesfour products: formaldehyde, CH2O; oxalic acid, HO2CCO2H; azelaicacid, HO2C(CH2)7CO2H; and the aldehyde acid OHC(CH2)4CO2H. Drawtwo possible structures for erythrogenic acid, and suggest a way to tellthem apart by carrying out some simple reactions.
Energy in carbohydrates is stored as chemical energy which is released when the carbohydrate is broken down by the body to give glucose and ATP. Animals eat carbohydrates as energy molecules from which they derive energy from the stored chemical energy.
The equation is : moles=mass/molar mass so, the mass is 203 and molar mass is 159.69 You divide the 203 by 156.69 as the equation shows so the moles is 1.27 mol.
