Explain the molar energy of vacancy formation for silver

Reference no: EM13717885

Problem- 1) At what angle (in degrees) must {111} planes of platinum (Pt) be exposed to a collimated beam of thee X-rays in order to obtain by diffraction monochromatic CrKÎ± radiation.

2) The molar energy of vacancy formation for silver (Ag), ?Hv, is 84 kJ/mol. Given this information, determine for Ag the vacancy density (number of vacancies/cm3) at 1103 K. Assume the pre-exponential factor is one.

3) A p-n junction is obtained at a depth of 3 x 10^-3 cm below the surface by diffusion of antimony (Sb) into p-type germanium. What is the donor concentration in the bulk germanium if the diffusion is carried out for three hours at 790 C? Express your answer in number of donor atoms per cubic centimeter. Assume the surface concentration of antimony is held constant at 8 x 10^18 cm-3 and that the diffusivity at 790 C is 4.8 x 10^-11 cm2/s.

Write your solution in appropriate format and provide references

Reference no: EM13717885

Questions Cloud

Compute the energy required to excite the rotational motion : Compute the energy required to excite the rotational motion of the molecule to the first ecited statet. How does this energy change if you deuterated the molecule

Express power shared by the federal government : How is power shared by the Federal, State and local governments? If one level of government had to be abolished, which one would you abolish, and why?

Define what is the calibrated volume of the pipet : A volumetric pipet is labeled as 25mL. If it delivers a 24.844g of deionized water at 31 degrees Celsius, what is the calibrated volume of the pipet. What would be the mass of water delivered from this pipet if the water temperature was 15 degrees..

Explore the general wage concerns : What are the general wage concerns that management and employee representatives bring to the negotiating table? Why have profit-sharing plans replaced COLAs in some recently negotiated agreements?

Explain the molar energy of vacancy formation for silver : The molar energy of vacancy formation for silver (Ag), ?Hv, is 84 kJ/mol. Given this information, determine for Ag the vacancy density (number of vacancies/cm3) at 1103 K. Assume the pre-exponential factor is one.

Describe the difference between optimizing and satisfying : Explain the difference between "optimizing" and "satisficing" in making decisions, and distinguish between routine and non-routine decisions.

Find the permittivity of the lunar regolith : For 140 MHz radio, the reflected intensity was observed to dip at reflection angle 60°. Estimate the permittivity of the lunar regolith. Does the frequency of the radio much matter?

Explain the advantages and disadvantages of radiography : Describe radiography as a form of nondestructive inspection. Discuss the advantages and disadvantages.

Explain the advantages and disadvantages of ultrasound : Describe ultrasound as a form of nondestructive inspection and discuss the advantages and disadvantages.

User Account

All Pages