planck constant h


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Electromagnetic Radiation and Energy(Planck's quantum theory)
where 'h' is proportionality constant, universally referred to as Planck's constant. It has a fixed value of: h = 6.63 x 10 3 4 joule.sec or h = 3.99 x 10 - 1 3 kJ sec mol - 1 . This relation was found to be valid for all types of electrom..
Hydrolysis constant
relation between hydrolysis constant and dissociation constant The hydrolysis constant may be written as: ..
Hydrolysis constant
The hydrolysis constant may be written as: (vi) for weak acid, For weak base BOH, Also, K w = [H + ] [OH - ] Multiplying equation (vi) by equation [H + ] [OH - ], we get ..
Critical Constant and Van der Waal's Constant
formula of critical compressibility factor Relationship between Critical Constant and Van der Waal's Constants - The relationship between critical constants of the gases and their Van der Waal constants is as follows: (i) V c = 3b (ii) P c = a/27b 2 (iii) T c = 8a/27Rb (iv) The critical compressibilit..
Constant negative acceleration
constant retardation Here, the velocity-time graph is a straight line with a negative slope, as shown in the figure below...
Calculation Of Dissociation Constant K
dissociation constant Degree of dissociation ( a ) at a particular concentration c is related to the dissociation constant (..
Phase Constant in SHM
shm phase constant Phase Constant in SHM..
Units of Equilibrium Constant
formation of hydrogen iodide Units of Equilibrium Constant - In mathematical sense, equilibrium constant is not a constant. It is called constant because at a fixed temperature and pressure, the value of the equilibrium constant for a reaction is constant. The unit of..
Constant volume gas thermometer
constant volume thermometer At any temperature, the pressure of a gas depends upon its volume. If the volume is kept constant, the pressure depends upon the temperature and increases steadily with rising temperature. The constant volume gas thermometer uses the pressure at constant volume as the..
Solar Constant (S)
pyroheliometer The solar constant is defined as the amount of heat energy received per second per unit area by a perfect black body placed at the surface of the Earth with its surface being held perpendicular to the direction of the sun's rays. The value of solar constant is 1388 Wm - 2 or 2 c..
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