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Two gases X(Mol.Wt.Mx) and Y(Mol. Wt. M...

Two gases `X(Mol.Wt.M_x)` and Y(Mol. Wt. `M_y, M_ygtM_x`) are at the same temperature T in two different containers. Their root mean square velocities are `C_x` and `C_y` respectively. If the average kinetic energies per molecule of two gases X and Y are `E_x` and `E_y` respectively, then which of the following relation (s) is (are) true?

A

`E_xgtE_y`

B

`C_xgtC_y`

C

`E_x=E_y=3/2RT`

D

`E_x=E_y=3/2k_BT`

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