State Gay-Lusaac’s law 

Explanation

### Step-by-Step Text Solution for Gay-Lussac's Law

**Step 1: Definition of Gay-Lussac's Law**
Gay-Lussac's Law states that for a fixed amount of gas at constant volume, the pressure of the gas is directly proportional to its absolute temperature.

**Step 2: Understanding the Parameters**
In this law, we consider three main parameters:
- Pressure (P)
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