What weight of SO₂ can be made by burning sulphur in 5.0 moles of oxygen

Question: What weight of SO₂ can be made by burning sulphur in 5.0 moles of oxygen

(a) 640 grams

(b) 160 grams

(c) 80 grams

(d) 320 grams

Correct Answer: (d) 320 grams