State Henry's law correlating the pressure of a gas and its solubility in a solvent and mention two applications for the law.

Explanation

### Step-by-Step Text Solution:

**Step 1: State Henry's Law**
Henry's Law states that at a constant temperature, the solubility of a gas in a liquid is directly proportional to the pressure of that gas above the liquid. This can be mathematically expressed as:
\[ C = k_H \cdot P \]
where:
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