对于3Fe(s)+4H2O(g)Fe3O4(s)+4H2(g),若起始投入3mol铁、4mol水汽在体积为0

对于3Fe(s)4H2O(g)Fe3O4(s)4H2(g),若起始投入3mol铁、4mol水汽在体积为0.5L的密闭容器中反应,平衡时氢气的物质的量浓度4mol·L1,则化学平衡常数为

A1/3      B1/6.75     C1/27         D1

答案

D

相关题目

从产业结构上看,我国高新技术产业发展格局呈现趋势是:A.
从产业结构上看,我国高新技术产业发展格局呈现趋势是:A.综合化B.多元化C.一体化D.系统化
He kept a little notebook, in which ______ the names and addresses of his friend
He kept a little notebook, in which ______ the names and addresses of his friends. A. wrote                    B. was writing C. was written               D. were writt
(二)古代诗歌阅读(10分) 阅读下面这首诗,完成18~19题
(二)古代诗歌阅读(10分) 阅读下面这首诗,完成18~19题 日暮倚杖水边① [金]王寂 水国西风小摇落,撩人羁绪乱如丝。 大夫泽畔行吟处,司马江头送
如今,互联网已成为未成年人认知和参与社会的新途径。调
如今,互联网已成为未成年人认知和参与社会的新途径。调查显示,我国未成年人中,91.4%使用过互联网,72.5%上网时遭遇过不良信息,64.9%会模仿网络
—What do you want to do next? Wehave half an hour until the basketball game.
—What do you want to do next? Wehave half an hour until the basketball game. —________.Whatever you want to do is fine with me. A.It just depends     B.It’s up to you    C.All right
如图,等边三角形OAB的边长为8,且其三个顶点均在抛物线E:x2=2py
如图,等边三角形OAB的边长为8,且其三个顶点均在抛物线E:x2=2py (p>0)上. (1)求抛物线E的方程; (2)设动直线l与抛物线E相切于点P,与直线y=-1相交于点Q,证明
若,,则                    .
若,,则                    .
“共筑泉城蓝”,从身边做起,从我做起.下列关于环境保
“共筑泉城蓝”,从身边做起,从我做起.下列关于环境保护的说法中,错误的是( ) A.生活垃圾分类处理,禁止随意焚烧 B.化石燃料的大量使用

最新题目