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问题:

如果用本实验探究铜是不是H2O2分解的催化剂,需要对上述实验方案进行补充,其中必要的是_______

如果用本实验探究铜是不是H2O2分解的催化剂,需要对上述实验方案进行补充,其中必要的是________。

A.称量实验前铜丝网的质量

B.将实验后的铜丝网干燥、称重

C.向仪器中加入二氧化锰

D.将实验后的铜丝网插入AgNO3溶液中


  参考答案

正确答案:ABD

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