阿Q吧 > 镁在空气中燃烧不仅生成氧化镁，还有少量镁与氮气化合生成氮化镁（N2+3Mg 点燃 . Mg3N2）．由此推知，6g

镁在空气中燃烧不仅生成氧化镁，还有少量镁与氮气化合生成氮化镁（N2+3Mg 点燃 . Mg3N2）．由此推知，6g

2025-04-06 23:18:20
推荐回答（1个）
回答1：

设若产物全部为氧化镁时产物的质量为x．
2Mg+O2

 点燃 
 
2MgO
48          80
6g         x
48
6g
＝
80
x

x=10g
设若产物全部为氮化镁时产物的质量为y．
3Mg+N2
 点燃 
 
Mg3N2
72         100
6g         y
72
6g
＝
100
y

y=8.3g
通过以上计算可知所得产物质量应在8.3g与10g之间．
故选C．

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