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At what temperature will the average vel...

At what temperature will the average velocity of `O_(2)` molecules be equal to that of `H_(2)` molecules at 20K?

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As given, `sqrt(8RT_(1)//piM_(1))=sqrt(8RT_(2)//piM_(2))`
or, `(T_(1))/(M_(1))=(T_(2))/(M_(2))" "therefore (T_(1))/(32)=(20)/(2)" "or,T_(1)=320K`.
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