A、B两种元素的相对原子质量比为1：16，它们所组成的化合物中A、B

A、B两种元素的相对原子质量比为1：16，它们所组成的化合物中A、B两元素的质量比为1：8，则该化合物的化学式可表示为 ( )

A．AB B．AB₂ C．A₂B₃ D．A₂B

答案

相关题目

Jim likes to play ____________ football and was on ____________ school team.

Jim likes to play ____________ football and was on ____________ school team. A. /; the B. /; / C. the; the D. a, a

6、ATP在生物体的生命活动中发挥着重要的作用，下列有关ATP

6、ATP在生物体的生命活动中发挥着重要的作用，下列有关ATP的叙述，不正确的有几项( ) ①人体成熟的红细胞、蛙的红细胞、鸡的红细胞中均能合成ATP

下图1表示某动物卵细胞形成过程；图2表示卵细胞形成过程中

下图1表示某动物卵细胞形成过程；图2表示卵细胞形成过程中某阶段的细胞。请据图回答：（1）图1中细胞Ⅱ的名称是，正常情

I hope you don’t mind me asking, ______________ where did you buy those shoes?

I hope you don’t mind me asking, ______________ where did you buy those shoes? A. so B. and C. yet D. but

某同学在做测定玻璃折射率的实验中，不慎将平行玻璃砖的

某同学在做测定玻璃折射率的实验中，不慎将平行玻璃砖的边界线aa′向外侧平移了一段距离，如图所示，而其他的操作和计算都没有错误，则该同学测

达尔文观察格伦岛上的昆虫，少数昆虫翅膀很发达，大多数

达尔文观察格伦岛上的昆虫，少数昆虫翅膀很发达，大多数昆虫翅膀退化了，他认为昆虫翅膀的两极分化是由于( ) A．用进废退的结果 B．获得性遗

First,it is important to recognize what kind of person you are and which special

First,it is important to recognize what kind of person you are and which special qualities make you different from_______. A.everyone else B.the oth

Babies born in summer are more likely to become short-sighted in late life, a s

Babies born in summer are more likely to become short-sighted in late life, a study has shown． As many as a quarter of all cases of short-sightedness are caused by too great an exposure to sunligh

A、B两种元素的相对原子质量比为1：16，它们所组成的化合物中A、B

答案

相关题目

最新题目