Question

AT 200K, what is the rms speed of Helium atom? [mass of He atom is 4u,1u = 1.66×10^(-27 ) Kg;K_B=1.34×10^(-23) J/K]

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please help​

Answer 1

Answer:

From kinetic theory of gases, rms speed is given by the formula

vrms=M3RT

Hence,

vrms,He=43(8.31)(300)(1000)=1368m/s

vrms,Ne=20.23(8.31)(300)(1000)=609m/s