The rms velocity of molecule in a sample of helium gas is 5/7th of the molecules in the sample of hydrogen If the temperature of hydrogen samples is 0 degree celcius then the temperature of helium sample about

Dear pallvi

 we know

Vrms = √3RT/M

Vrms(H)  =√3R273/2

Vrms(He) = √3RT/4

Vrms(He) =5/7 Vrms(H)

√3RT/4  =5/7 { √3R273/2 }

T/4  = 25/49 {273/2}

T=278.57 K

  = 5.57 C

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