Question

The temperature of low pressure hydrogen is reduced from 100 degree celsius to 20 degree celsius .Thermal speed of its moleclues decreases by approximately?

Answer 1

@.Sam.

Answer 2

We'll take the <c^2> since its approximation
\[KE_{ave}=\frac{1}{2}mv_{ave}^2=\frac{3}{2}k_BT\]
Since
\[T∝v^2\]