# Avogadro’s Law

**Definition**: Avogadro’s Law describes the relationship between the number of moles (n) and volume (V) while temperature (T) and pressure (P) remain constant.

**Relation**: *n and V are directly proportional* so as “n” increases, volume increases.

n α V

**Equation:**

**Example:**

**Problem**: If a the volume of 2 mol of helium gas is 44.8L, what is the volume of 0.5 mols of the same gas?

GIVEN:

n_{1} = 2 mol

V_{1} = 44.8L

V_{2} = ?

n_{2} = 0.5 mol

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