Discuss qualitatively how you would expect the exciton binding energy in a GaAs/Alo.3Gao.7 As quantum well to vary with the quantum well thickness, given that the binding energy of the excitons in bulk GaAs and Alo 3 Gao.7 As are 4 me V and 6 me V respectively.

Q: It is considered that a solid substance has an orthorhombic structure. Since the edges of the unit…

A: Edges of unit cell: a = 3.50 A b = 4.0 A c = 5.5 A Miller indices of plane for which diffraction is…

Q: Iron nanoparticles were produced by the evaporation method and their average sizes are estimated 25,…

A: The peak width (β) can be calculated using the Scherrer equation which can be represented as…

Q: Diamond crystallises in a face-centred cubic structure with a = 3.5625 Å. Calculate the d-spacing…

A: The objective of this question is to determine the d spacing value and peak position. The synthesis…

Q: (b) Copper nitride Cu3N adopts the ReO3 structure in the cubic space group Pm3m with a = 3.814 Å.…

A:

Q: The volume of O2(g) adsorbed on a surface of 1 g of a silica sample at 5°C is V1=1.4 cm3 at P1=95.1…

A: According to question,Given data,P1 = 95.1 torr,P2 = 760 torr,V1 = 1.4 cm3,V2 = 10.6 cm3

Q: In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g H2(g) + % I(g)…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Given the following selectivity coefficients for a K* ISE, which of the below ions would cause the…

A: Here we are asked to select the ion which cause the greatest interference.

Q: the binding energy of a KCI molecule was estimated to be 5.15 eV by assuming each of the K+ and Cl…

A: In an ionic compound, the binding energy can be thought of as the energy required to separate the…

Q: Why the concnetration with mol/dm^3 was used in kb calculations with no conversion to mol/m^3 to…

A: The conversion of unit depends on calculations.

Q: 40Ca? b. Calculate the packing fraction of this nuclei? c. Calculate the energy that required to…

A: C40aPacking fractional of this nucle is =Isotopic mass‐atomic mass/atomic mass×100=44-40/40×100 Ca…

Q: Given these two equations, calculate Cv for CO2 and N2 using the velocity of sound. 6. According to…

A: The objective of the question is to calculate the molar heat capacity (Cy) for CO2 at 300 K using…

Q: The absorbance of an unknown dye solution is measured to be 0.47 by a spectrometer. The linear…

A: The given expression for the linear equation for the spectrometr calibration is ; Y = 2156.5 X +…

Q: 19-6. The 3d322-2 orbital has the quantum numbers n = = 3, l = 2, m₁ = 0. Consulting with the tables…

A: The objective of the question is to demonstrate that the 3d orbital with quantum numbers n = 3, l =…

Q: What role does tunnelling play in electron transfer?

A: Tunneling is a quantum mechanical phenomenon when a particle is able to penetrate through a…

Q: Define the flux, J, of a property and describe the rate of migration of a property by flux J, in…

A: In simple words, the concept that a solute will move from a region of high concentration to region…

Q: Hydrogen purification was conducted at 550 °C using a 3-mm-thick palladium sheet having an area of…

A: Solution :         Diffusion is a process that shows the movement of the particle from an area of…

Q: Explain why small uncertainties in the measured potential of ISEs can cause large errors in the…

A: Ion selective electrode also known as the specific electrode, converts the activity of a particular…

Q: What is the major limitation of IR regarding the materials that can be used for instrumental…

A: The limitations of the materials that can be used for IR is determined on the basis of several…

Q: For a carbon granule microphone, determine a suitable value for m. if the contribution from each of…

A: Solution - According to the question - Given -   For each of the higher order terms is to be less…

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.