Calculate `w, q, Delta H` and `Delta U` for an ideal gas expanding in vaccum
isothermally

Explanation

To solve the problem of calculating the work (w), heat (q), change in enthalpy (ΔH), and change in internal energy (ΔU) for an ideal gas expanding in a vacuum isothermally, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Process**:
- The gas is expanding isothermally, which means the temperature (T) remains constant throughout the process.
- The gas is expanding in a vacuum, meaning there is no external pressure opposing the expansion.

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