A gas at a pressure of 1 atm is compressed at a constant pressure from `10.0` litres to `2.0` litres. If 500 J of heat energy leaves the gas calculate (i) the work done by the gas and (ii) the change in its internal energy.

Explanation

To solve the problem step by step, we will follow the given information and apply the relevant formulas.

### Step 1: Convert the Pressure and Volume Units
We are given:
- Pressure \( P = 1 \, \text{atm} \)
- Initial Volume \( V_1 = 10.0 \, \text{litres} \)
- Final Volume \( V_2 = 2.0 \, \text{litres} \)

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