为探究碳酸钠和碳酸氢钠固体的热稳定性,某同学设计了“套管实验”,装置如图,大试管a与小试管a相连通,大试管b小试管b相连通. (1)则大试管 Template




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tomski为探究碳酸钠和碳酸氢钠固体的热稳定性,某同学设计了“套管实验”,装置如图,大试管a与小试管a相连通,大试管b小试管b相连通. (1)则大试管 coloring