电解水的化学方程式 2H2O=电解=2H2(气体)+O2(气体)

该反应中涉及的三种物质H2O H2和O2的摩尔质量分别是

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18g/mol；2g/mol；32g/mol

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H2 是2g/mol H2O 18g/mol

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18g/mol，2g/mol，32g/mol

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36,4,32

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18g/mol 2g/mol 32g/mol

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