题目

Fei Xiang, whose English name is Kris phillips, is a Chinese American. He is nearly two meters tall, with blue eyes, looking like an Asian. Though he was born in Taiwan, he grew up speaking Chinese to his mother and English to his father and students at Stanford University in California. Later he returned from abroad to Taiwan and become a singer. In 1986, Fei Xiang visited the mainland(中国大陆)and turned into a pop star there. He was well known among the young people and his songs were widely accepted such as “Fire in the Winter”, “Clouds of My Homeland” and so on He left 将5．5 g铁铝混合物粉末加入900mL 1．00 mol/L HNO3溶液中，充分反应后，得a L（标准状况）NO气体。（1）HNO3是否过量___________。（2）若a=3．36L（标准状况），则混合物中铝的质量分数为_________%。（3）若a=3．36L（标准状况），往反应后的溶液中加入___________ mL 1．000 mol/L NaOH溶液时生成的沉淀量最大，还要加________ mL 1．000 mol/L NaOH溶液才能使沉淀的量保持不变。