1. If 6.3 g of Fe reacts with 3.1 g of O₂ in a closed container, what mass of product will form?
3.1 g
3.2 g
9.4 g
19.5g
2. The reactant side for an equation is 6A₂B + 5AD₂. How many atoms of A must be on the product side because of the Law of Conservation of Matter?
11
17
12
22