作业帮 > 化学 > 作业

The compound noradrenaline contains 56.79% C,6.56% H,28.37%

来源：学生作业帮 编辑：神马作文网作业帮 分类：化学作业 时间：2024/11/07 02:32:33
The compound noradrenaline contains 56.79% C,6.56% H,28.37% O,and 8.28% N by mass.What is the e
The compound noradrenaline contains 56.79% C,6.56% H,28.37% O,and 8.28% N by
mass.What is the empirical formula for noradrenaline?
The compound noradrenaline contains 56.79% C,6.56% H,28.37%
化合物去甲肾上腺素（noradrenaline）从质量上看含了56.79%的碳元素,6.56%的氢元素,28.37%的氧元素,8.28%的氮元素.问noradrenaline的化学式是什么? 
已经知道了有4种元素了,只要知道每个有几份就行了,
假设
C->a, H->b,O->c,N->d
C的质量好像是12,H是1,O是16,N是14
化合物的质量就是12a+b+16c+14d
所以
12a/(12a+b+16c+14d)=56.79%
b/(12a+b+16c+14d)=6.56%
16c/(12a+b+16c+14d)=28.37%
14d/(12a+b+16c+14d)=8.28%
算一下a,b,c,d各等于多少就行了 
最后算出来a=8,b=11,c=3,d=1
C8H11NO3
结构是这样的（图）
The compound adrenaline contains 56.79% C,6.56% H,28.37% O,a 英语化学求分子式题!The compound adrenaline contains 56.79% C,6.56% H, 英语翻译The Internet contains[3] the electronic equivalents of c the Compound Sentence compound 问2个英文的化学式Hydrogen cyanide－contains C,H and Nphosphorous pent 两个题 就是氧化还原那块的~第一个An organic compound contains carbon,hydroge The username contains forbidden characters. THE MAN WITH THE COMPOUND EYES怎么样 a question about the compound sentence... The name you entered contains illegal characters. stay in the car until safely parked inside the compound