I may quote, e.g., the exhaustive work of Rühlmann, where, in the chapter on the history of the molecular theory, Joule is only alluded to, and immediately afterwards the theory of Krönig is given in extenso, without any hint that it is practically identical with that given by Joule...
According to the kinetic theory of gases, nmλ = ρλ is independent of pressure and the mean velocity of the molecules can be expressed as [1] (4.6)v¯=8RTπ where R is the individual gas constant and T is the absolute temperature. The viscosityμ can now be written as (4.7)μ=...
At a given temperature, all gases have the same KEavgfor their molecules. The molecular velocity of a gas is directly related to molecular mass. Gases composed of lighter molecules have more high-speed particles and a higherurms, with a speed distribution that peaks at relatively higher velocit...
During more than a decade, kinetic phenomena arising in gases under velocity-selective excitation have been the object of many studies (see, in particular, Refs. [1–6]). When the momentum relaxation rates v e for the excited and v g for the ground-state molecules are different, the ...
If 'v' is the velocity of sound in a gas , then 'v' is directly proportional to (here M , d and T represents molecular weight of gas , density of gas and its temperature , respectively.) A√M B1√d C√T Dboth (b) and (c)Submit Molecular mass of a gas is 78 . Its densi...
The movement of one gas through another by thermal random motion. Diffusion is a very slow process in air because the mean free path is very short (for N2 at STP it is 6.6x10-8 m). Given the nitrogen molecule’s high velocity, the collision frequency is very high also (7.7x109 coll...
Based on the postulates of kinetic molecular theory of gases and root mean square velocity \(‘{\rm{C}}’\) the Kinetic gas equations, \({\rm{PV = }}\frac{{\rm{1}}}{{\rm{3}}}{\rm{mn}}{{\rm{C}}^2}\) is derived, where \({\rm{P}}\) is pressure, \({\rm{V}}\)...
Assertion : The molecular weight of oxygen is 32 amu. Reason : The atomic weight of oxygen is 16 amu View Solution Calculate the rms velocity of oxygen molecules at S.T.P The molecular weight of oxygen is 32. View Solution Statement I: Equal masses of helium and oxygen gases are give...
Besides the equilibrium pair-correlation function the dynamical quantities calculated were: the time dependence of the moments <X 2> and <X 4> of the displacement, velocity autocorrelation function and test particle correlation functions: F s(k, t) and S s(k, 蠅). Both the full potential ...
Precollapse clouds have significant interior velocity fields, which appear to be a mixture of turbulence derived from fast stellar winds and outflows, and magnetohydrodynamic (MHD) waves associated with the ambient magnetic field. In addition, there may be evidence for a systematic shift in velocit...