Estimate the mean free path of a molecule of air at `27^(@)C` and one atmospheric pressure. Given average radius of each air molecule is `2.0 xx 10^(-10)m`.

Explanation

To estimate the mean free path of a molecule of air at 27°C and one atmospheric pressure, we can follow these steps:

### Step 1: Convert Temperature to Kelvin
The temperature is given as 27°C. To convert this to Kelvin:
\[ T = 27 + 273 = 300 \, \text{K} \]

...