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一、利用质量守恒巧解例1将10 g KMnO4放到试管里加热,一段时间后,称得剩余固体的质量为9.2 g,则剩余物是()(A)K2MnO4和MnO2(B)K2MnO4(C)KMnO4和K2MnO4(D)KMnO4和K2MnO4和MnO2
First, the use of conservation of quality clever solution Example 1 10g KMnO4 placed in a test tube heating, after a period of time, said the mass of the remaining solids 9.2g, then the residue is () (A) K2MnO4 and MnO2 (B) K2MnO4 C) KMnO4 and K2MnO4 (D) KMnO4 and K2MnO4 and MnO2