What is the water potential of pure water at atmospheric pressure?

Explanation

To determine the water potential of pure water at atmospheric pressure, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Water Potential**: Water potential (Ψ) is a measure of the potential energy of water in a system. It determines the direction of water movement and is influenced by solute concentration and pressure.

2. **Pure Water Characteristics**: Pure water is defined as water that does not contain any solutes. In pure water, the concentration of free water molecules is at its maximum.

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