Does a gas do any work when it expands adiabatically ? If so, what is the source of the energy needed to do this work ?

Explanation

To determine whether a gas does work when it expands adiabatically and to identify the source of energy needed for this work, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Adiabatic Process**:
In an adiabatic process, there is no heat exchange with the surroundings. This means that the heat transfer (Q) is zero.

**Hint**: Recall that in an adiabatic process, the system is thermally insulated, so Q = 0.
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