Average molar mass within interval/(kg molF') interval/g Molar mass Mass of interval/ sample within (kg mol-1) 5-10 6.5 16.0 10-15 11.5 27.1 15-20 19.5 29.5 20-25 23.5 13.4 25-30 28.5 8.7 30-35 35.5 3.5

Q: 2. The Tg of poly(vinyl acetate) is listed as 29°C. If 5 mol % of divinyl benzene is copolymerized…

A: The Answer to the following question is-

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

A:

Q: calculate the ionic attractive energy between K and O ions per mol of the material.

A: Between  K+ and O2-  ionic bond is formed. Ionic bonds are formed when positively and negatively…

Q: A first-order (n = 1) reflection from the plane of a cubic crystal was observed at a glancing angle…

A: The Bragg’s equation is given by

Q: Iwo specimens of paraffin having densities 2.144 g/cm³ with crystallinity ratio 51.3% and 2.215…

A: According to Question , we have to find density of crystalline and amorphous specimens, given data…

Q: B. The contact angle for water on clean glass is close to zero. Calculate the surface tension of…

A: From the given date ,  The contact angle = 0  Cos (0) = 1 Temperature at °C = 30°C Height of water…

Q: What is the first-order scintillation angle of the shimmering x-rays of a crystal surface with a…

A: Given that: Order of Scintillation (n)= 1 Distance between the two planes (d) = 0.204nm Wavelength…

Q: Show by calculation how many unit cells of iron share one carbon atom when it is dissolved to…

A: Introduction: Unit cell: Unit cell is the smallest repeating unit of crystal structure. The unit…

Q: Proposed a laboratory procedures on how to determine polymer molecular weight based on osmotic…

A:

Q: How can I determine the bulk density from their mass in bulk volume

A:

Q: When the temperature is 20 ° C, water flows through an ostwald viscometer at 363 s, whose density…

A: Viscosity of a substance is a glowing capacity of that substance. Normally thin liquids have  less…

Q: 3. Write down the expression for retractive force, f, in terms of enthalpy, H and entropy, S, for…

A: Expression for rubber elasticity :  The unique elastic properties of rubber all arise from the…

Q: What is amount of space (in nm^3) occupied by atoms in the face-centered cubic whose side is 2 nm?

A:

Q: 7)Viscosity inscresses with increasing pressure true or false

A: Viscosity is the resistance to the flow of a liquid and gases. It is generally measured in a unit…

Q: What is the distinction between matrix and dispersed phases in a composite material?

A: a composite is formed with a continuous phase called the matrix. As shown in the figure below, the…

Q: Given that the radius of a metal is 211.79 pm, determine the edge length for a body centered cubic…

A: Crystal lattice is defined as the three dimensional arrangement if atoms or ions in a crystal.…

Q: For a crystalline substance with a hexagonal unit cell, the distance interplanar d is given by the…

A: Given: a = 0.247 nm c = 0.679 nm Brag Plane = 002 To Calculate:  angle 2θ

Q: gy E required for deformation can be calculated using which formula? (L = length of d

A: According to the question, IN A CRYSTAL, ENERGY 'E' REQUIRED FOR DEFORMATION CAN BE CALCULATED USING…

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

A: Polymers are formed by polymerization of monomer units, which consist of a long repeating chain of…

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: Determine the dispersity of a sample of a synthetic polymer with number-average molar mass 36 kg…

A:

Q: Briefly explain the difference between particle and crystal size

A: One of the four basic states of matter is solid. A solid's molecules are densely packed together and…

Q: Explain the followin Bragg method

A:

Q: How can we describe a single-phase material?

A: Single phase material is the material contains only one phase .

Q: what is liquid junction potential ?

A: When two different concentrations of electrolyte solution come in contact forms liquid junction…

Q: Q#04. (a) Calculate the number of atoms per unit area in (100), (110) and (111) planes of in bcc…

A: for (100) atom present per unit area is 0.5 for (110) atom present per unit area is 1.5 unit area is…

Q: True o

A: In this question we have to explain that The above statements are true or false with suitable…

Q: If Ag nanocubes, tetrahedra, octahedra, and nanospheres are suspended in water with no capping agent…

A: For the above qustion ,Ag nanocubes, tetrahedra,octahedra and nanospheres among of these which is…

Q: xplain the following Bragg method

A: Solid is one of the four fundamental states of matter. The molecules in a solid are closely packed…

Q: Determine the number of Frenkel and Schottky defects per cubic centimeter of a metal chloride at 40…

A:

Q: How many (a) nearest neighbours, (b) next-nearest neighbours are there in a body-centred cubic…

A: SOLUTION: Step 1: (a) For BCC, each lattice points have 8 nearest neighbors (in the centers of the…

Q: In detail outline the phenomenon and the cause of phase transitions in polymer systems.

A: (a) Phase transitions in polymers occur due to changes in intermolecular forces that hold polymer…

Q: Iron- and aluminum-oxide surfaces will generally adsorb cations more strongly at lower pH than at…

A:

Q: Can you draw a graph of molar conductivity using the data?

A: According to Debye-Huckel-Onsager theory the molar conductivity is related to the concentration for…

Q: Given that an atom of a semiconductor has a diameter of 3.31 ÅÅ , what is the maximum number of…

A: Given information, Diameter of an atom = 3.31A° = 3.31*10-10 m Radius of atom = diameter/2 =…

Q: Taking one of the corners to be the origin, give the lattice points for the face centered cubic unit…

A:

Q: What is the surface tension of benzene(in micro-Newton/m), if it rises to a height of 1.06299 inch…

A:

Q: Describe the process of simple diffusion?

A: Definition: Diffusion is the movement of particles from the region of high concentration to the…