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试题答案

本文从以下几个角度介绍。

    1、金科大联考高三3月质量检测物理
    2、2024-2024学年金科大联考高三9月质量检测
    3、20242024金科大联考高三十月质量检测
    4、2024-2024金科大联考高三十月
    5、金科大联考2024年高三3月
    6、金科大联考高三十月
    7、金科大联考高三六月质量检测
    8、2024~2024学年金科大联考高三3月
    9、2024-2024学年金科大联考高三四月质量检测
    10、2024-2024学年金科大联考高三12月质量检测答案

3、金科大联考·2026届高三9月质量检测(HB)历史试题


4、金科大联考·2026届高三9月质量检测(HB)历史试题


We have science.
We talk about animals.
It's in the afternoon.
（ ）4.—Do you like art —______
A. Yes, I like. B. No, I do. C. Yes, I do. It's fun.
（ ）5.—What subjects do we have this morning —______
A. We like Chinese. B. We have Chinese and maths. C. It's Monday.


13．When there is a lot of housework, which does the writer start with
14．Please list two things the writer sometimes does while doing the housework.
15．根据文章内容，请在横线上填入适当的词（每空限填一词）。
The writer thinks the best way to motivate ourselves to clean the house is to to our home.
阅读下文并回答问题。
A recent survey shows that only 30% of middle school students do housework at home. Some students think they should spend all their time on studying, while others don’t know how to do it. However, teachers and parents believe doing housework is important for students’ growth. The following stories show how three students learned from doing housework.
Wang Mei’s Chore JourneyWang Mei is a 14-year-old girl from Jiangsu. She has been helping her parents with housework since she was 10. Every day after school, she sweeps the floor, washes the dishes, and sometimes cooks simple meals. At first, she didn’t like doing chores and thought it was boring. But over time, she became better at doing chores and took more responsibilities (责任) at home. Now she even teaches her classmates to do simple chores. Tom’s Weekend ChallengeTom is a 13-year-old student in London. Every weekend, he writes a short diary about the chores he does. Last Saturday, he helped his dad clean the car and watered the plants in the garden. On Sunday, he cooked a simple breakfast for his family. By doing chores, Tom has learned useful life skills. He also gave a talk at school about why children should help with housework. Doing chores teaches them teamwork and develops their independence.


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3、金科大联考·2026届高三9月质量检测(HB)化学答案


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3、金科大联考·2026届高三9月质量检测(HB)数学答案


AgCl的Ksp分别为2.0×10-12和1.8×10-10)。
解析：(1)①除去Fe2+且不引入新的杂质，应选择H2O2溶液，将Fe2+氧化为Fe3+；利用沉淀转化原理除去溶液中的Cl－，为了不引入新的杂质，应选择Ag2SO4。②为使某些金属离子转化为沉淀而Zn不被沉淀，应选择ZnO。(2)由反应Cu2+(aq)＋MnS(s) CuS(s)＋Mn2+(aq)可知，Ksp(MnS)＞Ksp(CuS)，该反应的平衡常数K＝＝>1，故该反应达到平衡后溶液中的c(Mn2+)＞c(Cu2+)。(3)由Ksp(AgCl)＝c(Ag＋)·c(Cl－)可得c(Ag＋)＝＝ mol·L-1＝1.8×10-5 mol·L-1；由Ksp(Ag2CrO4)＝c2(Ag＋)·c(CrO)可得c(CrO)＝＝ mol·L-1≈6.17×10-3 mol·L-1。
答案：(1)①H2O2溶液　Ag2SO4　②ZnO
(2)>
(3)1.8×10-5　6.17×10-3
()(共43张PPT)
第45讲　难溶电解质的沉淀


B
用熟石灰处理酸性废水
熟石灰具有碱性
C
蒸煮鸡蛋
加热使蛋白质变性
D


3、金科大联考·2026届高三9月质量检测(HB)化学答案