欢迎光临
我们一直在努力

2023衡水金卷先享题调研卷语文二

2023衡水金卷先享题调研卷语文二,我们收集并整理关于2023衡水金卷先享题调研卷语文二得系列试卷及其答案,查看更多2023衡水金卷先享题完整的试卷及其答案请关注WX公众号:趣找答案

衡水金卷先享题调研卷2023

以下是关于2023衡水金卷先享题调研卷语文二的相关内容展示

1、2023衡水金卷先享题调研卷语文二

2、2023衡水金卷先享题调研卷四全国乙卷

3、衡水金卷先享卷调研卷历史2023

(2003?甘肃)写出下列反应的化学方程式:
(1)磷在氧气中燃烧4P+5O2

点燃
.

2P2O5

4P+5O2

点燃
.

2P2O5

(2)铁和硫酸铜溶液反应______;
(3)二氧化碳与焦炭在高温下反应CO2+C

高温
.

2CO
CO2+C

高温
.

2CO;
(4)氯化铁溶液和氢氧化钠溶液混合______.最新问答:

  • 解题思路:(1)磷在氧气中燃烧时会生成五氧化二磷分析解决.
    (2)铁与硫酸铜反应会置换出硫酸铜中的铜进行分析解决.
    (3)二氧化碳和焦炭反应时是一氧化碳进行分析解决.
    (4)氯化铁与氢氧化钠反应生成氢氧化铁和氯化钠进行分析解决.

    (1)磷在氧气中燃烧时会生成五氧化二磷,然后利用化学方程式书写规则书写即可.
    (2)铁与硫酸铜反应会置换出硫酸铜中的铜进行,然后利用化学方程式书写规则书写即可.
    (3)二氧化碳和焦炭反应时是一氧化碳进行,然后利用化学方程式书写规则书写即可.
    (4)氯化铁与氢氧化钠反应生成氢氧化铁和氯化钠,然后利用化学方程式书写规则书写即可.
    故答案为:
    (1)4P+5O2

    点燃
    .
    2P2O5
    (2)Fe+CuSO4=FeSO4+Cu;
    (3)CO2+C

    高温
    .
    2CO;
    (4)FeCl3+3NaOH═Fe(OH)3↓+3NaCl;

    点评:
    本题考点: 书写化学方程式、文字表达式、电离方程式.

    考点点评: 化学方程式的书写,可以联系着质量守恒定律、元素符号和化学式的书写及其意义、化学方程式的配平、常见物质的状态等相关知识细心地进行书写.并且,书写化学方程式的步骤,可以简记为“写、配、标、注”四个字.

  • 用先行词it改写列句子
    1.用先行词it改写下列句子:
    (1)Possibly the Joneses will come to the party as well.
    (2)Whether they will come or not doesn′t matter very much.
    (3)He is quite likely to let you down.
    (4)You seem to have taken a dislike to him.
    (5)I happen to have had some nasty experiences in dealing with him.
    (6)Getting the car on the boat was rather complicated.
    (7)To be with you here this evening is a great pleasure.
    (8)You were so kind to invite us.
    (9)What you say does not matter in the least.
    (10)How he came to have such a valuable painting is a mystery.最新问答:

  • it is possible that Joneses will come to the party as well
    it doesnt matter very much whether they will come or not
    it is quite likely for him to let you down
    it seems you have taken a dislike to him
    it happens to me that i have had soem nasty experiences in dealing with him
    it was rather complicated getting inthe car on the boat
    it is a great pleasure to be here with you this evening
    it is so kind of you to invite us
    it dosent matter in the least of what you say
    it is a mystery how he came to have such a valuable painting
  • 赞(0)
    未经允许不得转载:衡水金卷先享题2025答案网 » 2023衡水金卷先享题调研卷语文二

    2024-2025衡水金卷先享题答案网

    联系我们联系我们