Pure magnesium metal is often found as ribbons and can easily burn in the presence of oxygen. When 3.22 g of magnesium ribbon burns with 6.99 g of oxygen, a bright, white light and a white, powdery product are formed. Enter the balanced chemical equation for this reaction. Be sure to include all physical states

1. What is the limiting reactant?
2. The percent yield for the reaction is 84.1%, how many grams of product were recovered?
3. How many grams of the excess reactant remain?