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已知金属铝的熔点比金属镁高,则镁铝合金的熔点( )



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2015߿ѧһר(1)ר1
˵ȷ( A.Ͻ۵þ۵֮ B.úϽþ...֪ݶ Al2O3 3H2O ĻԭΪ: Al2O3 3H2O + 2NaOH(aq...
...:ʱҵ() 3.4;㷺 ...
˵ȷ ( A.Ͻ۵þ۵֮ B.úϽ...(5: Fe(OH)3 Fe(OH)2 Cu(OH)2 ʼʱ pH 1.9 7....
ʡϲеѧ2015-2016ѧһѧѧĩ...
һþϽѧʽΪ Mg17Al12,д ...Ͻ۵þ۵֮ B.úϽ...(4ξнǿĻԭ ...
ڶµڶ仯
й˵ȷ( ) A.þϽ۵þ۵֮ ... 2й Al(OH)3 ͼ - 4.֪,Al(OH)3 ...
һþϽѧʽΪMg17Al12,д,...
һþϽѧʽΪMg17Al12,д,úϽһȫ...AϽ۵þ۵֮ BúϽþԪسʸ,Ԫس...
ѧһָϰ仯ϰ
۵һҲĸɷֽĸ D.Ͻɽ...þȿȡþ B.ֱ... ͼǴƱ: ֪:(1)...
þϰ1
þ۷еӲȶߵԭ [ ] A.þĺ...þȽԭǿʵ [ ] A.þϽ...5 49.֪ Zn2+ҺеμӰˮ, Zn(...
2015-2016þ֪ʶ
˽ϽϵҪ() (Ҫ ...(3: ۵/ MgO ӻ 2800 Al2O3 ӻ ...
...˵þϽе( )۵ Ӳȴ...
þϽӦƳɱʼDZǡгܵ,˵þϽе( ) ۵ Ӳȴ չԺ ܵǿ ܶС ͸ʴ...
2009߿ѧþĽⷽ
2009߿ѧþĽⷽ__н...3 (1996Ϻ߿) ʵþ...֪MgCl2۵MgO,ӺˮȡþҪ...
رǩ
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