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At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at-20°C ?(atomic mass of Ar=39.9u,He=4.0u)​

Answer»

ong>Answer:

SOLUTION : Let C and C' be the r.m.s. Velocity of argon and a helium gas atoms at temperature TK and T'K respectively. SINCE, C=C′,∴,√3RT39.9=√3R×2534orT

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