# Q. B 2 I am trying but I am getting answer 8 g as molar mass. But answer is hydrogen.

Khimraj
3007 Points
4 years ago
rms velocity is given as
Vrms = $\sqrt{3RT/M}$
So
1930 = $\sqrt{3*8.31*300/M}$
So
M = 0.002 Kg = 2gm
SInce gas is diatomic
So it is Hydrogen gas.
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