衡水金卷先享题调研卷2023物理二

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写出下列化学反应方程式，并在括号中说明类型：
（1）加热氯酸钾和二氧化锰的混合物制取氧气2KClO₃

2KCl+3O₂↑；分解反应
2KClO₃

2KCl+3O₂↑；分解反应

（2）用石灰水鉴定CO₂气体______
（3）汽车尾气中含有CO与NO等有毒气体，其净化过程如下，①在催化作用下CO将NO还原成二氧化碳和一种气体单质；②再通入过量空气．使剩余CO完全氧化成二氧化碳，试写出这两个反应化学方程式：
①2CO+2NO

N₂+2CO₂

2CO+2NO

N₂+2CO₂

②2CO+O₂

2CO₂

2CO+O₂

2CO₂

（4）甲烷燃烧CH₄+2O₂

CO₂+2H₂O
CH₄+2O₂

CO₂+2H₂O．最新问答：

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American people have the habit of saying“Thank you”when something kind is done for them or something polite is said to them,no matter how easy the thing is．This habit is learned by people of many 1 countries．
You should say“Thank you”when someone 2 you the salt on the table when someone steps aside to let you 3 in a corridor(走廊),when someone 4 ahead of you keeps the door open 5 you,when someone says your work is well 6 or you have bought a nice thing,or your city is very beautiful．
“Thank you’’is 7 not only between strangers or new friends,but also between old friends,parents and children,brothers and sisters,husbands and wives．Parents often tell 8 children that they should say“Thank you’’in answer to a kind word or act when they are only four 9 five years old．Perhaps that’s 10 almost everyone has got this habit．
1．A．others B．another C．other D．else
2．A．puts B．passes C．carries D．borrows
3．A．pass B．jump C．sing D．dance
4．A．jumps B．walks C．sits D．walking
5．A．to B．with C．for D．on
6.A．made B．done C．built D．doing
7．A．tell B．said C．to say D．told ’
8．A．his B．theirs C．their’S D．their
9．A．but B．and C．or D．so
10．A．why B.because C．when D．reason最新问答：