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At what temperature will the total KE of...

At what temperature will the total `KE` of `0.3 mol` of `He` be the same as the total KE of `0.40 mol` of `Ar` at `400 K`

A

`533K`

B

`400 K`

C

`346 K`

D

`300 K`

Text Solution

Verified by Experts

The correct Answer is:
A
`KE= (3)/(2) nRT " "nT= "constant"`
`0.3xxT= 0.4xx400 " " T= 533.33 K`
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