A spherical vessel of radius r = 5 cm contains hydrogen `(H_2)` at a temperature T=300 K and pressure`p =10^5` Pa. How many molecules collide on the vessel in 1 s ?

Explanation

To solve the problem of how many hydrogen molecules collide with the walls of a spherical vessel in one second, we will follow these steps:

### Step 1: Calculate the Root Mean Square Velocity (Vrms)
The formula for the root mean square velocity of gas molecules is given by:

\[ V_{rms} = \sqrt{\frac{3RT}{M}} \]
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