(1)写出以下两种仪器的名称:  A:                    

(1)写出以下两种仪器的名称:

 A:                        B:                   

(2)某同学用托盘天平称量烧杯的质量,天平平衡后的状态如图.由图中可以看出,烧杯的实际质量为_________g.

(3)指出下面实验中存在的错误:                                          

答案

(1) 蒸馏烧瓶 冷凝管 (2)27.4 (3)混合气体从短导管进入洗气瓶(每空2分)


解析:

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