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Commercial grades of stearic acid(C17H35COOH) usually contain some palmiticacid (C15H31COOH) as well. A 1.115-g sample of a commercial -grade stearic acid is dissolved in 50.00 mLbenzene (d = 0.879 g/mL), and the freezing point of the solution is found to be 5.072 oC. The freezing point of pure benzene is 5.533 oC. What is the approximate mass percent palmitic acid in the stearic acid?
At 20 degrees celsius the vapor pressure of ethanol is 45 torr and the vapor pressure of methanol is 92 torr. what is the vapor pressure at 20 degrees celsius of a solution prepared by mixin 26.0 g. of methanol and 85 g. of ethanol?
The reaction will become more spontaneous. B) The spontaneity of the reaction will not change. C) The reaction will become less spontaneous. D) ?G will decrease. E) K will decrease.
calculate the PH at the points in the titration of 20.00 ml of 0.318M NH3 when, a) 10.00 ml and 15.00 ml of 0.475 M HCl have been added.
Consider the following balanced equation: 2 N2O5 → 4 NO2 + O2. If a 5.00 g sample of N2O5 undergoes this reaction, how many grams of O2 will also be formed?
Write the electronic configuration in sublevels for the following atoms
Write Draw a reasonable reaction mechanism (show the electron movement) for the synthesis of 2-butoxynaphthalene.
a metal sample weighing 45.0 grams and at a temperature of 99.1 degrees celsius was placed in 38.6 grams of water in a
Many carbohydrate linkages are cleaved by hydrolytic enzymes, which is different from glycogen phosphorylase that uses phosphorolysis. There are two acceptable mechanisms for hydrolysis of the glycosidic bonds
What is the molality of the 45.0 mass % ethylene glycol (C2H6O2) solution in the water
ketones, alchohol, amine ( primary, secondary, tertiary), alkane, branching alkane, non branching alkane and explain why?
What is the minimum volume of dripping water saturated with calcium carbonate that would be required to form a small stalactite that had a mass of 1.000 kg?
What are the advantages and disadvantages of using simple distillation vs fractional distillation methods. (in terms of gas chromatography)
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