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The major defects in KCl are known to be Schottky-type and the formation free energy of the cation vacancy is lower than that of the anion vacancy. Sketch the surface charge and surface defect concentration in pure KCl and in highly CaCl2-doped KCl. Sketch and explain the change in defect concentrations with temperature (in a scale of 1/T) in the bulk of a CaCl2-doped KCl.
A reciprocating compressor has been selected to compress 0.085 m3/s of 25oC methane gas from 100 to 6200 kPa. Assuming that the heat capacity remains constant at 2433 J/(kg?K) over the temperature range of compression and that the ratio of C p/C v ..
Assume that the average life expectancy of a Beagle is 13.3 years, and that 60% of Beagles lives to 12 to 15 years, and that their age follows normal distribution. Calculate the standard deviation of the distribution.
a sealed piston-cylinder assembly contains 3 lbm of water. the water is initially at p1 40 psia and t1 300degf. the
A metal has an atomic radius of 0.125 nm, an atomic weight of 58.69 g/mol and a density of 8.9 g/cm3. Determine whether it has a BCC or an FCC crystal structure
An initially empty, well insulated, rigid tank with a volume of 2 m^3 is fitted with a mixing device. The tank has two inlets and zero outlets. One inlet is water at 1.07 MPa and 630ºC while the other is saturated liquid water. Both enter the tank sl..
air at mass flow rate of 10 kgs at 1 atm 300 k point1 enters an adiabatic compressor and exists at 8 atm 600 k point 2.
two rigid tanks a and b of equal volume v1 m3 are connected by a pipe and valve. initially the valve is closed and the
you are to design a horizontal cantilever beam of uniform circular cross-section made of heat treated al 2024-t4. the
how are homogeneous and heterogeneous reactions of species accounted for in the species continuity equation? at what
When selecting a replacement motor for an existing system what fluid characteristics must be considered.
a boy throws a ball straight up from the top of a 12m tower. if the ball falls past him 0.75 s later determine the
A Brayton cycle uses air and produces a net work of 14000 Btu/s with an inlet state of 60°F, 14.7 psi and a compression ratio of 16. The heat added in the combustion process is 400 Btu/lbm. If the thermal efficiency is 0.547 Determine: Using variabl..
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