实验室用如图装置通过加热高锰酸钾来制备氧气.请你回答下列问题1实验室用高锰酸钾制备氧气的符号表达式是 2该装置试管中蓬松的棉花团的 Template




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tomski实验室用如图装置通过加热高锰酸钾来制备氧气.请你回答下列问题1实验室用高锰酸钾制备氧气的符号表达式是 2该装置试管中蓬松的棉花团的 coloring