By now much will the mean free path of a gas molecule in a vessel at constant `T` change if the pressure is reduced by `10%`?

Options

A. `10%` increase
B. `10%` decrease
C. `11.1%` increase
D. `11.1%` decrease

Explanation

To solve the problem of how much the mean free path of a gas molecule in a vessel at constant temperature changes when the pressure is reduced by 10%, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship**: The mean free path (λ) of gas molecules is directly proportional to the temperature (T) and inversely proportional to the pressure (P). This can be expressed mathematically as:
\[ \lambda \propto \frac{T}{P} \]
...