题目

Don and his 11-year-old son, Allen, love basketball very much. On Allen’s birthday, Don  21  to drive him to Chicago, more than two hours’ distance, for the first game of the World Championships. They had no  22  but hoped to buy two from other people. After arriving, they  23  in the streets for two hours carrying a   24  which said,” We need two tickets”.  25  the cheapest ticket was $175 and they could not  26  it. They were about to leave when a man  27  them. He pulled  28  two tickets and handed them to Don. “How much do you want?” “  29  ! No mo（9分）将一块重12.9 g且表面已经氧化的铝片放入300 mL 3 mol/L的盐酸中，放出气体3.36 L（标况下），且固体恰好完全溶解。（1）铝片中铝单质的物质的量是多少？（2）如果向上述的溶液中加入1 mol/L的NaOH溶液200 mL，生成沉淀是多少克？（3）如果向上述溶液中加加入1 mol/L的NaOH溶液1200 mL，是否有沉淀生成？如果有，是多少克？