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下图是“尾气催化转换器”将汽车尾气中有毒气体转化为无毒气体的微观示意图,其中不同的圆球代表不同的原子.下列说法错误的是（ ）
A..该反应没有单质生成
B.图中的反应物全部是化合物
C..参加反应的两种分子个数比为1:1
D.原子在化学变化中是不可再分的 C为什么对?
最新问答：
A 当然错的,我们看产物,里面有一个物质是两个相同的白色球组成的,就说明有单质生成.
B 图中的反应物确实都是化合物,你看反应前的图,它们里面没有哪个是由相同的球组成的.
C 是1：1,虽然它给你造成了一种2：3的错觉.是这样的,注意观察反应前和反应后,有没有看见其中有一组（大白球加小白球）从反应前到反应后都没有变?就说明这个分子没有参加这个反应,所以本质上反应的是两个（大黑球加小白球）组合和两个（大白球加小白球）组合,所以是1：1
D 确实是不可分的……
所以错误的,就只有A
反应方程式2CO+2NO==2CO2+N2（图中有一个NO未参加反应）
CO:NO=1:1
My bestfriend got a new bestfriend
hey..i became friends with this girl who was in my class when i was 14(im sixteen now) and soon we became the closest of friends..then the next year we had to change classes and she made a new friend in her new class..i kinda stick to my old circle of friends which includes her.i felt very sad and insecure as she became much closer to her new friend..all the things that we used to do together are now what they are doing.although we are still close..i dont think im her best friend anymore..and i dont blame the other girl as she is kinda nice.this has got nothing to do with jealousy as i cant stop her from being friends with ppl..itz just that i feel disturbed alot whenever she comes to me and tells me stories of how she and her friend hung out at this place and so on..then again.i dont want her to noe what im feeling as it would seem as if im very selfish..what should i do?最新问答：