An open flask contains air at `27^(@)C`. Calculate the fraction of air that would be expelled out, at `477^(@)C`. 

Explanation

To solve the problem of calculating the fraction of air that would be expelled from an open flask when the temperature changes from \(27^\circ C\) to \(477^\circ C\), we can use Charles's Law, which states that the volume of a gas is directly proportional to its temperature (in Kelvin) when pressure is held constant.

### Step-by-Step Solution:

1. **Convert Temperatures to Kelvin:**
- The initial temperature \(T_1\) is \(27^\circ C\).
- To convert Celsius to Kelvin, we use the formula:
\[
...