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lipids are amphipathic moleules b.certain plant fatty acids are required (essential) in diets of animals c. Glycerol esterified with three fatty acids is called a sphingolipid d.Waxes are esters of long-chain alcohol and long-chain fatty acid e the short hand notation for fatty acid that is 20 carbons long with one double bond at carbon 5 can be written as 20:1(delta5)
A woman requires taking ibuprofen twice daily in 625mg amount. Each pill in the bottle is 250 mg then determine the number of pills the woman requires to consume each time she needs 625mg dosage
Identify the alkaline Earth metal. Express your answer as a chemical formula. Write the formula for the metal hydride. Express your answer as a chemical formula.
Calculate the following for an oil (MW=169g/mol) that distills during steam distillation at a boiling temperature of 98°C at 1atm of pressure. A) The mass of the oil that codistills with each one gram of water at 98°C
which are hybrid orbital the carbon at the following molecules a, H3C-CH3 b, H3C-CH= CH2 c, CH3-C Tripl bond C-CH2OH d, CH3CH=O
In a graph(Energy (kj/mol)) the first five ionization energies of an atom are IE1, IE2, IE3, IE4, and IE5. what is the element symbol and its complete electron configuration for
What volume of 1 M HCl do you have to add to change the pH of the solution to 6? Assume that the change in volume from adding HCl is negligible. Recall that pH = pKa + log([A-]/[HA]. I cannot, for the life of me, figure this out.
when it dissolves in water (3 moles of ions/mole of salt). Calculate the freezing point of a solution containing 18.8g of Na2SO4 in 465g of water. The Kf for water is 1.86C kg mol-1.
The gas pressure in an aerosol can is 1.8 atm at 25 degrees celsius. if the gas is an ideal gas what pressure would develop in the can if it were heated to 475 degrees celsius?
Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water . Suppose 36.4 g of hydrobromic acid is mixed with 5.9 g of sodium hydroxide.
A gas has a volume of 150 ml when its pressure is 0.947 atm. What will the volume of the gas be at a pressure of .987 atm, if the temperature remains constant
Caffeine (C8H10N4O2) is a stimulant found in coffee and tea. If a solution of caffeine in chloroform (CHCl3) as a solvent has a concentration of 0.0870 m, calculate the following. (a) the percent caffeine by mass (b) the mole fraction of caffeine
Find the theoretical, percent yield and percent error of the reaction - Calculate the percent error of this reaction.
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