What should be the temperature (in `""^@C`) for a gas with 240 ml volume at `30^@C` to occupy one-third of its volume ? The pressure is kept constant.

Explanation

To solve the problem, we will use Charles's Law, which states that the volume of a gas is directly proportional to its temperature (in Kelvin) when the pressure is held constant.

### Step-by-Step Solution:

1. **Identify the Given Values**:
- Initial volume (V1) = 240 ml
- Initial temperature (T1) = 30°C
- Final volume (V2) = one-third of V1 = 240 ml / 3 = 80 ml
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