Recall that the **kinetic energy of a gas** is given by:

$\overline{){{\mathbf{KE}}}_{{\mathbf{avg}}}{\mathbf{=}}\frac{\mathbf{3}}{\mathbf{2}}{\mathbf{RT}}}$

where **R** = gas constant, **T** = temperature

Calculate the root-mean-square velocity and kinetic energy of CO, CO_{2}, and SO_{3} at 286 K .

Which gas has the greatest kinetic energy?

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