12.两种固体物质混合后加热分解残留固体的质量是原混合物质量的一半这组混合物可能是下列的 a.na2co3和nahco3 b.mgco3和mgoh2 ——青夏教育精英家教�—— Template




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tomski12.两种固体物质混合后加热分解残留固体的质量是原混合物质量的一半这组混合物可能是下列的 a.na2co3和nahco3 b.mgco3和mgoh2 coloring