syg0855 幼苗
共回答了15个问题采纳率:93.3% 举报
1年前
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Uncle +姓还是名?2007全国英语竞赛复赛七年级,Your father has a brother.His na
1年前5个回答
Liu Na has a big___.She lives with her mother,father,grandpa
1年前1个回答
My father likes g______in the yard because he likes flowers.
1年前4个回答
请问Na+的结构示意图是什么?
1年前3个回答
好像硝长石也是Na盐.但是不溶于水.
______ is your father? Thank you.He is very well.
某固体物质的摩尔质量为M,密度为ρ,阿伏伽德罗常数为NA,则每个分子的质量和单位体积所含的分子数分别为( )
解释一下:为什么23gNa变成Na+时,失去的电子数NA
The pair of jeans _____(is/are)my father's.
1年前2个回答
My father often reads newspapers ___ ___ ___(在晚饭时).
i once knew a father and son who,saddled with their respecti
My father likes hamburgers for breakfast.对划线部分提问(hamburgers)
设NA表示阿伏加德罗常数,下列说法中,不正确的是
(1)现有mg某气体,它由双原子分子构成,它的摩尔质量为Mg•mol-1.若阿伏加德罗常数用NA表示,则:
电荷守恒 Na2CO3溶液中:c(Na+)+c(H+)=2c(CO32-)+c(HCO3-)+c(OH-) 为什么na+
Who has been regarded by some as "Father of the English nove
who is cousin's father's brother'father?
下列变化中,必须加入氧化剂才能发生的是( ) A.Al→Al 3+ B.SO 3 2- →SO 2 C.Na + →N
设NA为阿伏伽德罗常数的数值,下列说法正确的是( )
设NA为阿伏加德罗常数的值.下列叙述正确的是( )
你能帮帮他们吗
酵母菌的结构与制泡菜的微生物有哪些不同?
仿例子将下列偏旁组成四字成语,每个偏旁必须用完且只能用一次
平面向量a,b,a=(4,-3),|b|=1,向量ab=5那求向量b
I happened to see him on my way home.
You can’ imagine what great difficulty I had () his address
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请你分别在下列多边形的同一顶点出发画对角线:想一想:依此规律可以把10边形分成______个三角形.
不等式组的整数解的和为( ).
You waste(浪费)______ time. [ ]
若√(a²-3a+1)+(b+1)²=0,则︱a平方 +a平方分之1-b︱=?
已知数列an满足a1=4 an=4-4/an-1(n大于等于2) 求证bn是等差数列 求数列an的通项公式