Chemistry

1The limiting reagent determines the maximum amount of product.

2Balance: __Mg + __O₂ → __MgO

3In N₂ + 3H₂ → 2NH₃, 1 mol of nitrogen reacts completely to give ___ mol of ammonia.

4Balance: __CH₄ + __O₂ → __CO₂ + __H₂O

5In N₂ + 3H₂ → 2NH₃, 0.2 mol of nitrogen reacts completely to give ___ mol of ammonia.

6A balanced chemical equation obeys the law of

7Spectator ions take part in the reaction.

8Balance: __Al + __O₂ → __Al₂O₃

9What mass of calcium oxide is formed when 5 g of calcium carbonate is heated completely? CaCO₃ → CaO + CO₂ (Ca = 40, C = 12, O = 16)

10Percentage yield can be greater than 100% for a pure, dry product.