Magnesium burns in air with a dazzling brilliance to produce magnesium oxide: 2Mg (s) + O₂(g) → 2MgO (s)
How many moles of O₂are consumed when 3.55 mol of magnesium burns?

Question

Quizplus · Accepted Answer

According to the balanced equation, 2 moles of Mg react with 1 mole of O2. Therefore, 3.55 moles of Mg will consume 3.55/2 = 1.775 moles of O2, which is approximately 1.78 moles.

Magnesium Burns in Air with a Dazzling Brilliance to Produce