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3、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


1、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


B.She gave too much homework.


Students at Yingtianfu Academy had a(n) 2 life. They woke up early in the morning to practice calligraphy (书法) and read books. They studied 3 like Chinese, history, and something else. They also learned 4 to write poems and articles (文章).
Students at Yingtianfu Academy took part in all kinds of 5 as well, like debates (辩论) and shows. They often learned from each other, 6 some of them became good friends later.
Fan Zhongyan was a famous student from this school. He 7 5 years studying here. He worked very hard and often 8 late. During this time, he became 9 writing poems. He wrote hundreds of great poems. Today, we still read and enjoy many of them. Later, he worked as a 10 here. What the students learned from him helped shape (塑造) their future. Some of his students later became great people to work for the country.
1.A.called B.changed C.used D.told
2.A.hard B.free C.busy D.exciting
3.A.languages B.books C.science D.subjects
4.A.where B.what C.when D.how


1、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


6、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


2、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


6、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


3、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


1、[1号卷]A10联盟2024级高二上学期9月学情调研数学试题


(4)BD
【知识点】电极反应和电池反应方程式;化学平衡的计算;电解池工作原理及应用;电离平衡常数
【解析】【解答】(1)从图中可知,电解质溶液为KHCO3,阴极上CO2得电子结合碳酸氢根离子生成C2H4,电极反应方程式为或。
故答案为:
(2)pH=11,则c(H+)=10-11mol/L,H2CO3(aq)H+(aq)+(aq),Ka1=4×10-7,则,则,故c()>c(H2CO3),同理H++,Ka2=,,则c()>c(),故三种离子浓度从大到小的顺序为③②①。
故答案为:③②①
(3)①反应Ⅲ=反应Ⅰ×2-反应Ⅱ,ΔH3=(177×2-430)kJ/mol=-76kJ/mol。


D.断开化学键需要吸收能量.
【解答】解:A.需要加热才能发生的反应一定是吸热反应,如燃烧反应通常加热,故A错误;
B.放热的反应在常温下不一定很容易发生。如:铝热反应2 Al+Fe2O3Al2O3+2Fe是放热反应,但需在高热条件下以保证足够的热量引发氧化铁和铝粉反应,故B错误;
C.反应物所具有的总能量高于生成的总能量,在反应中会有一部分能量转变为热能的形式释放,反应为放热反应,故C正确;
D.断开化学键需要吸收能量,故D错误;
故选:C。
【点评】本题考查了化学反应中能量变化,比较基础,注意正确理解放热与吸热的本质,注意利用反例法进行的解答.


3、[1号卷]A10联盟2024级高二上学期9月学情调研数学答案