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Remembering that s with characterize the 1st and 2nd order interactions in polyethylene (PE) [s = exp(-500/RT) = .43 and = exp(-2000/RT) = .034 at T = 25 c] derive an RIS conformational model for PDMB, which considers sterosequence. Explain all assumptions made and compare the conformatioanl flexibility/ diversity of PDMB with that of PE, as well as indicate the most likely regular repeating conformation for each polymer and which one have the larger and why?
What is the gauge pressure at a depth of 4.50 mi below the surface of the sea if thewater temperature averages 60°F? Give your answer in lb (force) per sq. in. The sp grof sea water at 60°F/60°F is 1.042 and is assumed to be independent of pressur..
Use Coulomb's law to calculate the ionization energy in kJ/ mol of an atom composed of a proton and an electron separated by 278.00 pm . Part 2, What wavelength of light would have sufficient energy to ionize the atom
Calculate individual concentrations in an unknown mixture. Calculate the individual concentrations of C and of D in the following unknown mixture: Compound C: Absorbance at 365nm = 0.150 Absorbance at 470nm = 0.642 Concentration = 1.00 X 10^-4 Com..
The addition of bromine to ethene in the presence of high concentration of chloride ion in an inert solvent results in the formation of 1,2-dibromoethane and 1-bromo-2-chloroethane.
Calculate the value of the equilibrium constant for the overall solution process for the sparingly soluble salt in the presence of ammonia.
a question about an organic chemistry lab report. I am synthesizing aspirin (acetylsalicylic acid) using salicylic acid, acetic anhydride, and a catalyst.
How many photons are required to heat 295 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this temperature range.
How many grams of ethylene are needed to react with 0.120 mol of {\rm{H}}_2 {\rm{O}}{\kern 1pt}. How many grams of ethyl alcohol will result
12.0 moles of gas are in a 7.00L tank at 25 degrees Celsius. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a= 2.300L^2 and b=.0430mol.
a flash drum is a vessel in which a liquid stream is heated until some of it is vaporized and the liquid and vapor
Write the equilibrium expression for this weak acid dissociating in water? b. What is the pH of the solution after it had reached equilibrium
Calculate the osmotic pressure of a solution contains 0.0010 mole of KCl and 0.0010 mole of BaCl2 per liter of solution at 298 K
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