下列化学用语表示的含义不相同的是( ) A.CH3CH2CH3,C3H8 B.—NO2,NO2

下列化学用语表示的含义不相同的是(  )

ACH3CH2CH3C3H8

B—NO2NO2

答案

B

相关题目

下列说法正确的是:A.葡萄糖、麦芽糖的分子式都是C12H22O11
下列说法正确的是:A.葡萄糖、麦芽糖的分子式都是C12H22O11,二者互为同分异构体B.甘油既可以用于制造护肤品,也可用于制造炸药C.蛋白质、油脂
若将函数的图象向右平移个单位长度,则平移后图象的一个
若将函数的图象向右平移个单位长度,则平移后图象的一个对称中心是( ) A.     B.    C.     D.
Zhang Yimou’s 360 million yuan film “Curse of the Golden Flower” proved a
Zhang Yimou’s 360 million yuan film “Curse of the Golden Flower” proved a hit on its opening weekend, ______ nine million yuan in Shanghai’s cinemas alone.       A. having made     
计算的结果为(    ) A.           B.         
计算的结果为(    ) A.           B.              C.              D.
. Robert Owen was born in Wales in 1771. At the age of ten he went to work. His
. Robert Owen was born in Wales in 1771. At the age of ten he went to work. His employer had a large Private library so Owen was able to educate himself. He read a lot in his spare time and at ninetee
下列物质的化学式书写正确的是(      )          
下列物质的化学式书写正确的是(      )                                                       A. 尿素 CO(NH2)2     B
(6分)完成下表:(写出鉴定馒头、鸡蛋清、花生种子成分
(6分)完成下表:(写出鉴定馒头、鸡蛋清、花生种子成分的 实验现象和所含的物质等)实验材料馒头碎屑鸡蛋清花生种子操作过程滴碘液加热水在纸
己知DNA分子的一条母链上的部分碱基排列顺序为 A C G T ,那
己知DNA分子的一条母链上的部分碱基排列顺序为 A C G T ,那么以另一条母链为模板,经复制后得到的对应子链的碱基排列顺序是     A. T G C A       

最新题目