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Kinetic theory of gases. Boltzmanns Law and Maxwell distribution

Problem 2.64

Under standard conditions the density of the helium and nitrogen mixture equals ρ=0.60 g/l\rho=0.60 \mathrm{~g} / \mathrm{l}. Find the concentration of helium atoms in the given mixture.

Reveal Answer
 2.64. n=(p/kT−ρ/m2)/(1−m1/m2)=1.6⋅1019 cm−3,where  \text { 2.64. } n=\left(p / k T-\rho / m_{2}\right) /\left(1-m_{1} / m_{2}\right)=1.6 \cdot 10^{19} \mathrm{~cm}^{-3}, \text {where } m1m_{1} and m2m_{2} are the masses of helium and nitrogen molecules.
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