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# What is the temperature at which the kinetic energy of 0.3 moles of Helium is equal to the kinetic energy of $0.4$ moles of Argon at 400 k?

$\begin {array} {1 1} (1)\;400\;k & \quad (2)\;873\;k \\ (3)\;533\;k & \quad (4)\;300\;k \end {array}$
Can you answer this question?

(3) 533 K
answered Nov 7, 2013 by