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Problem- Proteins are sometimes embedded in the lipid membranes of cells. Many such proteins serve as channels to allow various things to flow in and out of the cells. The interiors of lipid membranes are very hydrophobic. Imagine a protein that is shaped like a doughnut. The top of the doughnut is exposed to one side of the membrane, while the bottom is exposed to the other. The hole allows water to flow between the two sides. What sort of residues would you expect to line the walls of the doughnut hole? What about on the outer regions that are exposed to the interior of the lipid membrane?
Any expert will able to make available correct answer for the above question.
The normale boling point of acetone is 56.2 C and its Hvap is 25.5kJ mol. At what temperature does acetone have a vapor pressure of 425mmHg?
You found that pH=pKa=4.2 when 12.50 mL of NaOH hadbeen added. The concentration of the sodium hydroxide was 0.500M. Calculate the initial percent dissociation of the acidsample.
Calculate the mole fraction of toluene in the solution that contains 48.0 g toluene and 139 g benzene.
In a typical experiment, 0.631 g of COCl2 is injected into a flask of volume 472 cc. When equilibrium is established, it is found that the total pressure is 2.175 atm. Calculate K for the reaction.
Identify the Lewis acids in the following two equilbrium systems: System A: CO2 + H2O ? H2CO3 System B: Zn2+ + 6H2O ? Zn(H2O)62+ A. A: H2O; B: H2O B. A: CO2
a solution of sulphide ct10-6m is blended into a 0.4m sodium chloride solution in a closed container. plot a pc-ph
Consider the dissolving of ammonium nitrate, NH4NO3 (s), for which ?H° = +25.3 kJ/mol. If 133 grams ofammonium nitrate are dissolved in 367 grams of water, and the initial temperature is 25.0°C, what will be the final temperature of the system
Give the coordination number of the central ion in each of the following complexions. a. Zn(OH)42-
The cylinder diameter is 2 inches and the depth of the water in the cylinder is 4 inches. Determine the concentration of salt in solution, showing your answer in the units specified.
Calculate the density of hydrogen sulfide gas, H2S, at 58°C and 896 mm Hg. Obtain the density in grams per liter.
Compound Z has a solubility limit of 32.5 g/L in diethyl ether. Compund Z has a solubility limit od 2.5 g/L in water. You are given a 100 mL aqueous solution that contains 200 mL of compund Z. If you do three 33.3 mL extractions of Z using diethyl..
Calculate the partial pressure of water at 23.6 Celsius by interpolation from the vapor pressure table.
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