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Answer Text

Solution :

At STP, the pressure is `1.0 xx 10^(5) N m^(-2)`. The rms speed is <br> `v_(rms) = sqrt(3p/rho)` <br> `= sqrt((3 xx 10^(5) N m^(-2))/((1.25 kg m^(-3))` <br> `=490 m s^(-1)`.