【简答题】句型转换。 1. What's your father's job? (改为同义句) ______ ______ your father? 2. His mother can play tennis. (改为一般疑问句,并作否定回答) ______ his mother ______ tennis? No, she ______ . 3. They can play basketbal...
【简答题】已知草酸(H 2 C 2 O 4 )在加热条件下的反应为H 2 C 2 O 4 CO 2 ↑+CO↑+H 2 O。现用下图甲、乙装置(图中a、b为活塞的开关)对生成的CO和CO 2 进行分离并干燥。可供选用的试剂有稀硫酸、浓硫酸和氢氧化钠溶液。 (1)打开活塞a,关闭活塞b,让混合气体通过甲、乙装置。甲中盛放的试剂为___________,有关反应的化学方程式为__________________...