Temperature of ideal gas is increased from 27 degree Celsius to 927 degree Celsius The RMS speed of molecule will become

Dear Student 

We know that 
vrms =3RTMi.e vrms α T
so vrms1 α 300      (temperature in kelvin)vrms2 α 1200dividing above eq.vrms1vrms2=3001200vrms2 =4vrms1vrms2 = 2vrms1

so new RMS velocity is twice the initial one.

Regards

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