Part A

What is the average speed $($actually the root$-$mean$-$square speed$)$ of a radon atom at $27C?$

$1\mathrm{.}74\frac{m}{s}$

$184$ m$/$s

$55\mathrm{.}2\frac{m}{s}$

$5\mathrm{.}82\frac{m}{s}$

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