步步高家教机新款
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1.比如一个可逆反应3A(g)+B(g)=2C(g),在定容的条件下,达到平衡.A为3mol/l B 1mol/l c 2mol/l .同时增大反应物和生成物的浓度,能否使反应速率增加而平衡不发生移动呢.(效果就如同催化剂那样).我
请问:-I think LI Ming is the strongest student in our class.的答语?
化学平衡的题Δs表示什么谢谢了,大神帮忙啊
有关化学平衡的问题,大神求助一定温度下,可逆反应:A(s)+2B(g)=====2C(g)+D(g)△H<0在甲、乙两容器中进行.起始时,将1mol A和2molB加入甲容器中,将4molC和2mol D加入乙容器中,此时
、、、兰的四字词语或成语.、、、竹的四字词语或成语求大神帮助
This is the point____they met some difficulty.A.when B.in which C.at which D.that参考答案给的是C,有资料介绍point做先行词用where,可换用in which,应选哪个
The pet shop( )lot of cuts pets. I want to(The pet shop( )lot of cuts pets. I want to( )a dog.
37.This is the magazine _______ I copied the paragraph.A.that B.which C.from that D.from which
求大神填空题
Where are the apples?They are 【】 the tree.
WE ARE MOVING TO A NEW HOUSE NEXT MONTH.还是WE ARE GOING TO MOVE TO NEW HOUSE NEXT MONTH.好象有BE V+ING TO 后面中将来时间就表示将来的说法?
大神们,填空题帮帮忙
请问WE ARE MOVING TO A NEW HOUSE NEXT MONTH.对吗,好象BE VING与将来时间同用有表示将来的意思
who are your teacher?哪里错了?快
How are your teacher 哪错了?
How are your teacher.哪里错了
滑坡和泥石流有什么区别?在等高线图上怎么判断?
You must wear your glasses.的中文
How long is it ____ we last spent the holiday in the country together?a. since b until c. that选A.B C错在哪?有什么用法区别?
Why didn't the workers likes the film?She was born on a big city in Canada.这两句哪里错了?
矿物质是重金属吗?土壤是由矿物质和有机物等一些物质构成,我想问,土壤的矿物质含量是不是等于重金属含量?矿物质是于重金属构成的吗?矿物质都由一些什么物质构成的?
princess中文翻译什么意思?
Cap帽是什么意思?
如何让孩子早日成才?
如何才能将孩子培养成才
如何让孩子自己成才
发光粉中的稀土是否有放射性?如题.
如何把孩子教育成才
磁材稀土有放射性元素么?
稀土具有放射性和毒性吗?
稀土氧化物会引起重金属中毒吗
茶具变色蟾蜍的原理一个瓷器的蟾蜍,遇到高温的茶叶水或热水,会变色,是不是表面有什么化学物质让他变色?知道的告诉一下,