Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Con?gurational entropy of square lattice models for polymers In this problem, we will consider, several models for a polymer on a 2D square lattice. In particular, we will focus on the con?gurational entropy that arises from the different conformations that a polymer can adopt. (Con?gurational entropy is distinct from translational entropy, which addresses polymer motion through space.) Any lattice polymer model requires that bonded monomers must occupy adjacent sites on the lattice. In class, we considered a 2D Self-AvoidingWalk (SAW) model for a polymer with the ?rst monomer tethered to a wall. The key aspect of the SAW model is that no two monomers may occupy the same lattice site, which provides a simple treatment of excluded volume.
Let us ?rst consider models of a polymer with n =3monomers.
i. The "ideal chain model" of a polymer does not account for excluded volume, but still treats polymer connectivity by requiring that successive monomers occupy adjacent lattice sites. Suppose that we ?xed the position of the ?rst monomer. How many con?gurations are accessible to an ideal chain model with n = 3 monomers. What is the entropy of this model?
ii. Now consider a SAW model for the same polymer. (This is the same model treated in class, except we are not yet considering the wall.) Determine the sample space of con?gurations accessible for this model. How many con?gurations are eliminated as a consequence of excluded volume and how does this change the con?gurational entropy of the polymer?
iii. Now consider a SAWmodel for the same polymer, but with the ?rst monomer bonded to the wall. (This is the model we treated in class.) How many con?gurations have now been eliminated as a consequence of the wall and what is the resulting entropy of this model? What had a bigger effect upon the polymer statistics, the excluded volume of the polymer or of the wall?
fajan rule state that large size highly negative charged ion form covalent bond
introduction to chemical bonding
Anomalous behaviour of Beryllium
If the density of a substance is 7.99 g/mL. What is the mass of 3.60 mL of this substance?
Given that the solubility product of calcium fluoride in water at 298K is 0.00000000004.Calculate the solubility of this calcium fluoride at this temperature. Assume the Debye-Huck
Chromatography - Purification of organic compounds This is a modern technique employed for the separation of mixtures into its components, purification of compounds and as well
factors affecting choice of radiotracer techniques
The reaction A ? B + C is known to be zero order in A and to have a rate constant of 5.0 x 10-2 mol/L·s at 25 oC. An experiment was run at 25 oC where [A]0 = 1.0 x 10-3 M. a)
As already discussed, the reduction of the metallic oxide usually heating it with some reducing agent such as carbon, carbon monoxide, hydrogen or some other metal. The reducing ag
Which one of the following is not isoelectronic with O 2- : (1) N- 3 (2) F - (3) Tl + (4) Na + Ans: Tl +
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd