A gas present at 5 atm pressure expands against one atmosphere when its volume changes from 3 litre to 5 litre. The work done by the gas in Joule will be ?

Explanation

To solve the problem of calculating the work done by the gas during its expansion, we will follow these steps:

### Step 1: Identify the given values
- Initial pressure of the gas (P_gas) = 5 atm (not directly used for work calculation)
- External pressure (P_external) = 1 atm
- Initial volume (V_initial) = 3 L
- Final volume (V_final) = 5 L

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