Mg(..)→(..)N(...)←(.)Mg(.)→(...)N(..)←(..)Mg
Mg2+(.)N3-(.)(Mg2+)(.)N3-(.)Mg2+
猜你喜欢
- 1体育课上,老师让学生报数,学生按1到2报数,再按1到3报数,最后按1到7报数,发现最后的学生每次都报了1.
- 23x-2y+2z=3.-2x+4y+3z=-3.5x+2y-3z=-12三元一次方程组
- 3样本数据10,10,x,8的众数与平均数相同,那么这组数据的中位数是( ) A.8 B.9 C.10 D.12
- 4( )---——.---Thank. A.Nice to meet you. B.Welcome to China . C.Yes,I am . D. Good moning.
- 5幼儿园小朋友分饼干,如果每人分7块,那么还缺3块;如果每人分5块,就余下15.一共有多少块饼干?
- 6在20摄氏度时,食盐的溶解度为36克,求20摄氏度时饱和的食盐溶液溶质质量分数?
- 7I'm going to the library after school.划线部分提问,划线的部分是:the library
- 8the number of people who were killed or injured reached more than 90000.为什么用复数啊the number of 表...的人数,不是要用单数吗
- 9如果任取4个自然数积为偶数,则至少有几个偶数?
- 10mike likes the livung room because he likes watching tv there翻译