How many moles of O2 are counsumed if 20 moles of SO2 are Produce

20 moles of O₂ are consumed when 20 moles pf SO₂ are produced.

Explanation:

1) Balanced chemical equation:

S + O₂ → SO₂

2) Mole ratios:

1 mol S : 1 mol O₂ : 1 mol SO₂

3) Proportion:

1 mol SO₂ / 1 mol O₂ = 20 mol SO₂ / x

4) Solve for x:

x = 20 mol SO₂ * 1 mol O₂ / 1 mol SO₂ = 20 mol O₂.

Answer: 20 moles of O₂ are consumed when 20 moles pf SO₂ are produced.