Question

At what temperature will $H_2$ molecules have the same R.M.S velocity as $N_2$ molecules have at ${27}^{\circ }$C?

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

$\sqrt{\frac{3R300}{28}}=\sqrt{\frac{3RT}{2}}$
$\Rightarrow T={21.4}^{\circ }K$