How does the random coil shape relate to the radius of gyration of a polymer chain?

Q: Why is the average molar mass of a polymer sample dif-ferent from the molar mass of an individual…

A:

Q: The polypropylene (repeat unit CH3CHCH2) in a plastic object has a molar mass of 2.8x10^5 g/mol and…

A: Calculate the degree of polymerization: n=Molecular weight of polymerMolecular weight of…

Q: The repeat unit in a polystyrene coffee cup has the formula C₆H₅CHCH₂. If the molar mass of the…

A: The degree of polymerization (DP or Xn) is defined as the number of monomer units in a polymer or…

Q: Explain when is the material is homogeneous and isotropic?

A: Homogeneous material: Homogeneous is something that is uniform throughout. A homogeneous material…

Q: A liquid rises to a height of 1.50 cm in a capillary tube. What is the radius of the tube if the…

A: The liquid rises and falls in a capillary tube due to the forces of adhesion and cohesion. The…

Q: The molar volume (that is, the total volume divided by the number of moles) of a certain form of…

A: Given: Volume/(number of moles) = 18 cm³/mol.

Q: How does pressure and crystallinity affect density of a material?

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: The physical characteristics of a polymer depend not only on its molecular weight and shape, but…

A: Polymer is a material that consists of a large number of repeating units called monomers. We know…

Q: Why are isotactic or syndiotactic polymers often more attractive for materials development?

A: An isotactic polymer is a compound that is formed by the arrangement of monomers in the same pattern…

Q: Does titanium expand or contract as it transforms from hcp to bcc? The atomic radius of titanium is…

A: In unit cell atoms are present at corner, faces and edges depending upon the type of unit cell. In…

Q: Linear molecules must be nonpolar, thus linear molecules cannot participate in dipole dipole…

A:

Q: Calculate the lattice constant of an NaCl crystal (fcc). Also calculate the spacing between the 110…

A: Given  density = 2.167 gram/cubic centimeter             = 2.167 gram/cm3 Plane = ( 1 1 0 )  lattice…

Q: Calculate the packing fractions of (i) a primitive cubic unit cell, (ii) a bcc unit cell, (iii) an…

A: Packing fractions give us an idea about how well the atoms are packed in the unit cell. The packing…

Q: What is the Clausius–Clapeyron equation and why is it important?

A: The vaporization curves of liquids are mostly similar and a straight line is not obtained for the…

Q: Cesium chloride has a body-centered cubic structure with unit cell 0.4123 nm. What is the potential…

A: Potential energy can be calculated using the following formula.

Q: The unit cell of a compound containing strontium, iron, and oxygen is shown here. Compute the…

A:

Q: Show that your calculation of number of atoms in a unit cell (⅛, ¼, ½, 1 added together support the…

A: We know Crack is a BCC(body centre cubic) structure . In BCC structure eight atoms are present at…

Q: What is the two-dimensional coordination number of a molecule in a squareclose packed layer?

A: The word "closest packed structures" refers to the most closely packed or space-efficient…

Q: surface energy of a single crystal

A: The surface energy of a single crystal depends on crystallographic orientation . The surface energy…

Q: Arrange simple cubic, bcc and fcc lattice in decreasing order of the fraction of the unoccupied…

A: Simple cubic, bcc, and fcc lattice in decreasing order of the fraction of the unoccupied space are…

Q: Given that the density of KBr is 2.75 g/cm3 and that the length of an edge of the unit cell is 659…

A: Interpretation: The density of KBr is 2.75 g/cm3 and that the length of an edge of the unit cell is…

Q: rends. Compound 1 has the lowest surface tension, 4 has the highest surface ension. SO3 HF CO2 CH20…

A: As the intermolecular force of attraction increase boiling point increase and surface tension…

Q: please provide in depth explainations as I will be using this to study.

A: Hydrogen bonding can take place between a highly electronegative atom and hydrogen. Intramolecular…

Q: what is meant by the term polarizability?

A: Polarization means separation of charges. So, as the name suggests, the polarizability is the…

Q: Prove that for a FCC lattice structure   a= 4R√2

A:

Q: All are apparatus used in the determination of surface tension of a liquid by the capillary rise…

A:

Q: Estimate at what temperature silicon tends to be as electrically conductive as diamond at room…

A: The solution is provided in the image below.

Q: The experimentally determined density of a material is lower than expected based on the arrangement…

A: H-bonding involves dipole-dipole interactions. It is formed between a H-atom and a highly…

Q: The heat of fusion of a sample of (polyethylene oxide) (PEO) was determined by DSC and turned out to…

A: Given that, the heat of fusion of a sample of (polyethylene oxide) (PEO) was determined by DSC and…

Q: The monomer of poly(vinyl chloride) has the formula C₂H₃Cl. If there are 1565 repeat units in a…

A: To calculate the molecular mass (in amu) of the chain that contains 1565 units of C₂H₃Cl.

Q: What is the edge length in pm for a simple cubic with a radius of 145 pm?

A:

Q: 6. Acetone (density = 0.792 ) rises to a height of 9.39 cm at 20 ° C in a capillary tube %3D ст-…

A:

Q: Why does conductivity of silicon increase with the rise in temperature.

A: The conductivity of silicon increases with the rise in temperature.

Q: Describe the efficiency, in general, of copolymerisation and plasticisation in lowering melting…

A: A copolymer is also known as polymer and when two or more than two monomer combined as result…

Q: 5. What is the phase angle of water in terms of viscoelastic behaviour? a) 0 b) 45 c) 60 d) 75 e)…

A:

Q: For a specific polymer, which of the following forms (isotactic, syndiotacytic, and atactic) will…

A:

Q: The height of a unit cell in an HCP structure was given as 5.2368Å. Determine the edge length in a…

A: Given, HCP unit cell height of the HCP unit cell = 5.2368 Å.

Q: Based on their composition and structure, list CH2Cl2,CH3CH2CH3, and CH3CH2OH in order of (a)…

A: The three compoundsi) CH2Cl2 : This compound contain Electronegative element Cl, it attaracts the…

Q: 1) The volume of one ruthenium atom (molar mass = 101.1 g/mol) is 1.211x10 -23cm³. What would be the…

A: Given  Volume of one ruthenium atom is 1.211x10-23cm3 MOLAR mass of ruthenium is 101.1 g/mol Density…