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Question: The ratio between the r.m.s. velocity of H2 at 50 K and that of O2 at 800 K is:...

The ratio between the r.m.s. velocity of H2 at 50 K and that of O2 at 800 K is:

A

4

B

2

C

1

D

¼

Answer

1

Explanation

Solution

(Vrms)1(Vrms)2=T1M2M1T2\frac{\left( V_{rms} \right)_{1}}{\left( V_{rms} \right)_{2}} = \sqrt{\frac{T_{1}M_{2}}{M_{1}T_{2}}}