What would be the sign convention for work done on a system for a cylinder containing one mole of an ideal gas where `P_(ext) = P_(int)` ?

Explanation

To determine the sign convention for work done on a system when the external pressure (P_ext) is equal to the internal pressure (P_int) of a cylinder containing one mole of an ideal gas, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the System**:
- We have a cylinder containing one mole of an ideal gas.
- The internal pressure (P_int) is the pressure exerted by the gas inside the cylinder, while the external pressure (P_ext) is the pressure exerted by the surroundings on the gas.

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