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1. Plot of the Fermi distribution function at two different temperatures. Calculate the Fermi timction at 6.5 eV if EF=6 .25 eV and T=300 K. Repeat for T=950 K assuming that the Fermi energy does not change. Plot the energy dependence of the electron distribution function at T=300 K and at T=950 K assuming EF=6.25 eV. 2. Numerical evaluation of the effective densities of states of Ge, Si and GaAs. Calculate the effective densities of states in the conduction and valence bands of germanium, silicon and gallium arsenide at 300 K.
Demonstrate Comprehension Level of Learning for preparation and submission of documents according to a specified form.
Slabs of filter cake with a bone-dry density of 1600 kg/m3 are to be dried from an initial free moisture content of 90% (dry basis) to a final free moisture content of 5% (dry basis) batchwise in trays that are 1 m long by 0.5 m wide with a depth ..
If the feed quality is changed to 80 mol% vapour, the change in the slope of the q-line isA homogeneous reaction (R ® P) occurs in a batch reactor. The conversion of the reactant Ris 67% after 10 minutes and 80% after 20 minutes. The rate equation..
Gas Absorption and Transfer Operations: Column Diameter Calculation, A gas absorption column to handle 3630 kg/hr of a gas is being designed. Based on pressure drop, entrainment and foaming considerations
When algae growing in water containing only 16O were furnished carbon dioxide containing 18O, no 18O was found to be evolved from the oxygen gas produced. What conclusions about photosynthesis can be drawn from these experiments?
Consider the following cyclic process carried out in two steps on a gas: Step 1: 45 J of heat is added to the gas, and 10. J of expansion work is performed. Step 2: 60. J of heat is removed from the gas as the gas is compressed back to the initial..
Estimate the cost of the following items of equipment: a. A packaged boiler to produce 20,000 kg/h of steam at 40 bar
The pressure of a sample of gas at a constant temperature of 25 degrees C is increased from 1.0 atm to 1.2 atm. If the original volume was 3.8 liters, what will the new volume be?
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
The stack gas emerges at 760 mm Hg. Calculate the percentage conversion of hexane, the percentage excess air fed to the burner, and the dew point temperature of the stack gas.
in the direct steelmaking reactor based on the reduction of an oxidizing foaming slag by char carbon particles and
The feed is a saturated liquid at 330 kPa. The recovery of toluene in the distillate should be greater than 99%, and the recovery of ethylbenzene in the bottoms should be greater than 99%.
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