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> 镁条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(Mg 3N 2)。 (1)氮化镁中氮元素的化合价为____； (2)镁条燃烧只生成氧化镁的化学方程式为_____________________________； (3)若有24g镁在空气中完全燃烧，则所得产物的总质量m____ 40 g（填“>”“=”或“<”）。

问题：

发布时间：2024-09-07

镁条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(Mg ₃N ₂)。
(1)氮化镁中氮元素的化合价为；
(2)镁条燃烧只生成氧化镁的化学方程式为_____________________；
(3)若有24g镁在空气中完全燃烧，则所得产物的总质量m 40 g（填“>”“=”或“<”）。

参考答案：

提问用户：Ml***NtD

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