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Given that the atomic mass of argon is 1...

Given that the atomic mass of argon is 10 times that of helium, at what temperature is the rms speed of a helium atom equal to that of an argon atom at `1247^(@)C` ?

A

`124.7^(@)C`

B

`-121^(@)C`

C

`-152^(@)C`

D

`-124.7^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
B
`T_(He)=(M_(He))/(M_(Ar))T_(Ar)=(1)/(10)(273+1247)=52K`
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