Q: The bulk modulus for liquid water at 298 K is 3.4 GPa. If it is assumed that the molecules are…
A: Given: K = 3.4G Pa = 3.4 x 109 Pa NA = 6.022 x 1023 mol-1
Q: A Knudsen cell was used to determine the vapour pressure of germanium at 1000 °C. During an interval…
A:
Q: Use eqn 14D.4 to deduce expressions for (a) the root-mean-square separation of the ends of the…
A: (a)
Q: Account for the hydrophobic effect and discuss its manifestations.
A: Hydrophobic is composed of two words hydro and phobic where hydro means water and phobic comes from…
Q: Describe how van der Waals interactions depend on the structure of the molecules.
A: Van der Waals forces are generally weak forces which consists of attractive forces which depend on…
Q: How is Molecular Speed disatributed?
A: the molecule of a gas travel randomly in all directions during this number of collisions takes place…
Q: The size of the ionic atmosphere, called the Debye radius, is 1/K, where k is given by e2 NA 1/2…
A:
Q: The diffusion coefficient of I2 in hexane at 25 °C is 4.05 × 10−9 m2 s−1. Estimate the time required…
A:
Q: The diffusion coefficient for molecular iodine in benzene is 2.13 × 10−9 m2 s−1. How long does a…
A:
Q: 6. why is the segmental mobility of a polymer reduced by the presence of the filter?
A: We have to tell the reason of the decrease of the segmental mobility of the polymer in the presence…
Q: At 25 °C the molar ionic conductivities of Li+, Na+, and K+ are 3.87 mS m2 mol−1, 5.01 mS m2 mol−1,…
A: Mobility "u" formula is: Substitute the given conductivities of the given ions in this formula to…
Q: Calculate the vapour pressure of a spherical droplet of water of radius 10 nm at 20 °C. The vapour…
A: Given: Radius of spherical droplet at 20 oC = 10 nm Vapor pressure of bulk water = 2.3 kPa…
Q: Why does the lambda max of indigo dye is at 619 nm and its importance to determine?
A: Lambda max ( λmax ) : In the Absorption spectrum wavelength where substance shows the strongest…
Q: Discuss the implications for phase stability of the variation of chemical potential with temperature…
A:
Q: The diffusion coefficient of H2O in water at 25 °C is 2.26 × 10−9 m2 s−1. Estimate the time required…
A: Mean-square displacement: The variation of the position of a particle with respect to time.…
Q: According to Kolrausch's law of independent ionic migration, the molar conductivity of an…
A: Please find your solution below : Kohlrausch law of independent Migration of Ions states that the…
Q: what is molar conductivity? what are its units?
A: Molar conductivity:The conducting power of ions produced by dissolving one mole of an electrolyte in…
Q: A one-dimensional polymer chain consists of 700 segments, each 0.90 nm long. If the chain were…
A:
Q: What is the probability that the ends of a polyethene chain of molar mass 65 kg mol−1 are between…
A:
Q: What is the probability that the ends of a polyethene chain of molar mass 65 kg mol−1 are 10 nm…
A: In this problem, we have to answer what is the probability that the ends of a polyethene chain of…
Q: Estimate the effective radius of a glycine molecule in water at 25 °C given that its diffusion…
A: Given: Diffusion coefficient, D=1.055×10-9 m2 s-1 Viscosity of water, η=1 cP=0.001 kg m-1 s-1…
Q: Explain the following approaches to increasing the physical stability (uniformity) of dispersed…
A:
Q: By what percentage does the root-mean-square separation of the ends of a one-dimensional polymer…
A:
Q: Sketch the Miller Index in a unit cell [-1-1-1]
A: Given, the miller index of the plane is [-1, -1, -1].
Q: Describe the linear Lineweaver-Burk plot. slope y-intercept x-axis y-axis [S] 1/v 1/t t 1/v(max)…
A: Michaelis Menten equation shows the effect of the concentration of the substrate on the rate of an…
Q: Sketch the miller index [-21-2] in a unit cell
A: MILLER INDICES: A diagrammatic representation of the orientation of the faces of a unit cell that…
Q: Provide solution to the attached question ?
A: In solvent extraction the distribution ratio is often quoted as a measure of how well-extracted a…
Q: The radius of gyration of a three-dimensional partially rigid polymer of 1500 units each of length…
A: The radius of gyration around an axis is known as a radial distance to a point where moment of…
Q: (c) Why calibration by area normalisation is used when assessing drug stability
A: When a chemical substance imparts a notable change in the physiological activity of an organism,…
Q: Do the conclusion to polymer molecular weight determination by dilute solution viscosity…
A: Dilute Solution Viscosity measurement is the viscosity measurement of dilute solutions of polymer…
Q: What is dispersion statistics? Why is it important?
A: Answer - According to the question - Dispersion is a statistical term that describes the size of the…
Q: Calculate the number-average molar mass and the weight-average molar mass of a mixture of equal…
A: Given data contains, Molar mass of one polymer is 62 kg mol−1. Molar mass of other polymer is M =…
Q: Sketch the Miller index [12-1] in a unit cell.
A: The following steps are used to determine the intercept from the Miller index. 1. Take the…
Q: Which technique is used for the determination of symmetry of the unit cell and the position of the…
A: The given techniques are LEED,SEM,SAM,XRF.
Q: How do contour length, root-mean-square separation, and radius of gyration of a random coil depend…
A: The contour length, of a polymer is the length of the molecule measured along its backbone from…
Q: A one-dimensional polymer chain consists of 1200 segments, each 1.125 nm long. If the chain were…
A: The expression of root mean square separation of the ends of the chain is NL where N is the number…
Q: What are the units of molar conductivity?
A: conductivity of substance is its capacity to pass electricity . Molar conductivity can be defined…
Q: Calculate the average interaction energy for pairs of molecules in the gas phase with μ = 2.5 D when…
A: Given: μ=2.5D Separation distance = 1.0nm Temperature=273K To find: The average interaction energy…
Q: The distribution constant (K) is the main criterion for dividing the species of a sample between two…
A: Here we have to say on what factor distribution constant depend on-
Distinguish between number-average and weight-average molar masses. Why might they differ?
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 5 images
- Outline methods for polymer molecular weight determination by dilute solution viscosity measurement.By what percentage does the root-mean-square separation of the ends of a one-dimensional polymer chain consisting of 1000 monomers increase (+) or decrease (−) when the persistence length changes from l (the bond length) to 2.5 per cent of the contour length? What is the percentage change in volume of the coil?What is the gravimetric factor if a weight of cl is to be determined from a weight of PbCl2?
- Using 0.901 g/cm3 for density of tri - isopropylsilanol (i-C3H7)3SiOH and assuming spherical shape of the molecule, determine its molecular cross section and the maximal grafting density for these molecules supported on a flat silica surface.Assuming that the density of silica gel is 2.65 g cm-3 and that the silica particle are spherical with an average radius of 5 x 10-6 cm, calculate the estimated surface area Sest. Why is there such a large difference between S and Sest?The radius of gyration of a three-dimensional partially rigid polymer of 1000 units each of length 150 pm was measured as 2.1 nm. What is the persistence length of the polymer?
- It is observed that the critical micelle concentration of sodium dodecyl sulfate in aqueous solution decreases as the concentration of added sodium chlordie increases. Explain this effect.Sketch the Miller Index in a unit cell [-1-1-1]The diffusion coefficient for molecular iodine in benzene is 2.13 × 10−9 m2 s−1. How long does a molecule take to jump through about one molecular diameter (approximately the fundamental jump length for translational motion)?
- Calculate the vapour pressure of a spherical droplet of water of radius 10 nm at 20 °C. The vapour pressure of bulk water at that temperature is 2.3 kPa and its mass density is 0.9982 g cm−3.Account for the hydrophobic effect and discuss its manifestations.The diffusion coefficient of I2 in hexane at 25 °C is 4.05 × 10−9 m2 s−1. Estimate the time required for an iodine molecule to have a root mean square displacement of 1.0 cm.