下列说法中正确的是 A.在原子中原子核内的质子数一定等于中子数b.溶液稀释前后溶质的质量一定相等c.含碳的物质一定是有机物d.有盐和水生成 Template




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tomski下列说法中正确的是 a.在原子中原子核内的质子数一定等于中子数b.溶液稀释前后溶质的质量一定相等c.含碳的物质一定是有机物d.有盐和水生成 coloring