The first law of thermodynamics is adequate in predicting the direction of a process.

Explanation

To determine whether the statement "The first law of thermodynamics is adequate in predicting the direction of a process" is true or false, we can analyze the first law of thermodynamics and its implications.

### Step-by-Step Solution:

1. **Understanding the First Law of Thermodynamics**:
- The first law states that the change in internal energy (ΔU) of a system is equal to the heat added to the system (Q) minus the work done by the system (W).
- Mathematically, it can be expressed as:
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