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the measured molecular masses of many naturally occurring chemical elements differ appreciably from integer values due
100 ft3nbspof steam at 300degf and 147 psia is mixed with 300 ft3nbspof methane at 800degf and 147 psia assuming ideal
a rigid insulated tank is divided into two compartments by a partition initially 560 lbm of nitrogen is introduced into
1 a perfect gas mixture consists of 300 kg of nitrogen n2 and 500 kg of carbon dioxide co2 at a pressure of 100 mpa and
consider a superlattice consisting of alternating layers of equal thickness of gaas and alas the potential is a square
on planet 3m4g6 in the subsystem zeta-12 the atmosphere consists of a binary mixture of sewer gas methane and an
1 methane ethane and propane all ideal gases are mixed together in equal parts by mass to create a new super fuel gas
two parts of molecular hydrogen gas are mixed with one part of molecular oxygen gas on a molar basis at 200 mpa 000degc
a diving experiment is to be performed with a mixture of helium and air at a total pressure of 500 psia the composition
acetylene and oxygen are drawn from pressurized storage tanks and mixed together in an oxyacetylene torch in a ratio of
1 calculate the transmission properties of a sandwich where the middle material has its conduction band at the same
air at 0101 mpa and 500degc is saturated with water vapor it is to be aergonically heated to 800degc in a steady flow
calculate the edges of the lowest two or three bands using the same well but varying the width of the barriers b figure
1 verify that there are no physical consequences of constant vector and scalar potentials since these produce no fields
1 although most quantum wells have a flat bottom other profiles can be grown three examples are shown in figure 713 how
1 show that the polarizability of the lowest state in a quantum well tilted by an electric field equation 738 can also
consider a well 5 nm wide and 03 ev deep in gaas the lowest state in this well has a binding energy of 0210 ev so kappa
1 extend the previous exercise to estimate the position and width of the lowest band in a superlattice of alternating 5
1 how well does the nearly free electron model predict the band structure of the kronig-penney model plotted in figure
an electron is in the lowest state of a gaas quantum well of width 15nm which can be treated as an infinitely deep
1 extend the theory of section 91 to include the difference in dielectric constant between gaas and algaas by matching
calculate the burstein shift in the absorption edge of a direct semiconductor with parabolic bands due to heavy doping
a contrasting situation is provided by electrons trapped in a gaas quantum well suppose that the well is 10 nm wide
a thick layer of gaas which can be treated as three-dimensional is pumped in such a way that at the band gap sketch the
although the relative motion and that of the centre of mass cannot in general be separated for an exciton in a quantum