1. Balanced Chemical Equation:

The reaction between sulfur (S) and oxygen (O₂) produces sulfur dioxide (SO₂):

S(s) + O₂(g) → SO₂(g)

2. Mole Ratio:

The balanced equation shows a 1:1 mole ratio between oxygen (O₂) and sulfur dioxide (SO₂). This means that 1 mole of oxygen is required to produce 1 mole of sulfur dioxide.

3. Avogadro's Law:

Avogadro's Law states that equal volumes of gases at the same temperature and pressure contain the same number of molecules. Since we're dealing with gases at the same conditions, we can use the volume ratio directly.

4. Calculation:

Since the mole ratio is 1:1, the volume of oxygen needed will be equal to the volume of sulfur dioxide produced.

Therefore, you need 6.20 L of oxygen to react with solid sulfur and form 6.20 L of sulfur dioxide.