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A box contains a mixture of argon gas & Krypton gas. Both gases are monatomic. If...

A box contains a mixture of argon gas & Krypton gas.
Both gases are monatomic. If the gases are in thermal
equilibrium with one another, how are the rms velocities of the gas
particles Vpn and Vier, related? Atomic mass Ar = 18 & Krypton is 36.

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