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Explain Sommerfeld theory
Sommerfeld theory: The theory was originally proposed in 1900 to define and correlate the electrical and thermal properties of metals. Later, quantum mechanics became the basis for the theory of most of the common properties of simple metals like as sodium, with one free electron per atom, magnesium with two, and aluminum with three. Transition metals, like as iron, have partially filled electronic d states and are not treated by the free-electron model
What is migration current in polarography?
1. In the system shown schematically below, water is supplied to a spray nozzle by a gear pump with a constant output of 20 US gpm. The flow rate of water discharged through t
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problems of scales and sludge formation
If 2 grammes of zinc granules was reacted with excesss hydrocloric acid to evolued hydrogen gas which came to completion after 5 minutes. Calculate the rate of the chemical in gram
corrosion in boilers
in the combustion of heptane in oxygen CO2 was produced.if 500kg of dry ice was produced of which 50% of the CO2 was converted to dry ice,what is the amount of heptane needed to bu
Hard magnetic materials Permanent magnets are used as passive generators of magnetic field. To produce and maintain the magnetic field, a material should have both high resid
Refractoriness under load (RUL): This represents the resistance of a refractory material to the combined efforts of heat and load. RUL is the temperature at which the deformation
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