A) 20 K
B) 80 K
C) - 73 K
D) 3 K
Correct Answer: A
Solution :
\[{{c}_{rms}}=\sqrt{\frac{3RT}{M}}\] or \[{{c}_{rms}}\propto \sqrt{\frac{T}{M}}\] \[\Rightarrow \] \[\frac{{{T}_{1}}}{{{M}_{1}}}=\frac{{{T}_{2}}}{{{M}_{2}}}\] or \[\frac{T}{{{M}_{{{H}_{2}}}}}=\frac{273+47}{{{M}_{{{O}_{2}}}}}\] or \[\frac{T}{2}=\frac{320}{32}\] \[\Rightarrow \] \[T=20K\]You need to login to perform this action.
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