Amixture of lipids is applied to a silica gel column, and the column is then washed with increasingly polar solvents. the mixture consists of phosphatidylserine, phosphatidylethanolamine, phosphatidylcholine, sphingomeylin, palmitate, triacylglycerol, and cholesterol. in what order with the lipids elute from the column? explain your reasoning

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"