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If the r.m.s speed of shlorine molecule ...

If the r.m.s speed of shlorine molecule is `490m/s` at `27^(@)C`, the r.m, s speed of argon molecules at the same temperature will be (Atomic mass of argon=`39.9mu`, molecular mass of chlorine =`70.9mu`)

A

`751.7m/s`

B

`551.7m/s`

C

`451.7m/s`

D

`651.7m/s`

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