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标况下,H2O的质量为xg,含有y个*原子,则阿伏加德罗常数为( )A.18y/xB.9y/xC.18y/...
问题详情:标况下,H2O的质量为xg,含有y个*原子,则阿伏加德罗常数为( )A.18y/xB.9y/xC.18y/xmol﹣1D.9y/xmol﹣1【回答】D知识点:物质的量题型:选择题...