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科学家要研究跟碳元素及其化合物相关的很多课题． （1）焦炭可用于制取水煤气．测得12g碳与水蒸气完全反应生成水煤气时，吸收了131.6kJ热量，该反应的热化学方程式是______． （2）工业上可用焦炭冶炼金属，若0.5mol碳完全与赤铁矿反应，得到0.6mol铁，同时生成2种常见气体，则该反应的化学方程式是______． （3）碳跟水蒸气制水煤气的反应是一个可逆反应，下列情况下能判断该反应一定达到平衡状态的是______（选填编号）． a．v 正 （H 2 O）=v 正 （H 2 ） b．容器中温度不再发生改变 c．消耗n mol H 2 同时消耗n mol CO d．容器中气体的总物质的量不随时间改变 （4）温度T 1 时，在一体积为2L的密闭容积中，加入2.0mol CO和2.0mol的H 2 ，反应中c（H 2 O）的变化情况如图所示，T 1 时反应[C（s）+H 2 O（g）?CO（g）+H 2 （g）]的平衡常数的数值为______．在第5分钟时将体系的升高到T 2 ，若在第8分钟时达到新的平衡，请在如图中画出第5分钟到9分钟后c（H 2 O）浓度变化趋势的曲线（只要求定性表示）．
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皮皮学刷刷变学霸
举一反三
【单选题】上运动神经元损害的表现为
A.
痉挛性瘫,腱反射消失
B.
痉挛性瘫,腱反射亢进
C.
完全性瘫,腱反射亢进
D.
弛缓性瘫,腱反射消失
E.
完全性瘫,腱反射存在
查看完整题目与答案
【多选题】What is a correct statement about negotiable securities?
A.
They are aimed to pay in money.
B.
They must be signed by the issuer.
C.
Unconditionally paid by the issuer or another person.
D.
They are tile documents.
查看完整题目与答案
【单选题】What bills are negotiable?什么票据是可以背书流通的?
A.
Pay to John David only
B.
Pay to John David not transferable
C.
Pay to the order of ABC Co.
D.
Pay to bearer.
查看完整题目与答案
【判断题】( )零件图未注出公差的尺寸,就是没有公差要求的尺寸。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Task 3 Listen to Andy’s report on the release plan of the new hair care product. Decide whether the statements are true (T) or false (F) according to what you hear. ( ) 1. The newly released shampoo s...
查看完整题目与答案
【单选题】What are required for the foreign importer to clear the goods through customs?
A.
A negotiable bill of lading.
B.
Related documents.
C.
Both of the above.
D.
None of the above.
查看完整题目与答案
【单选题】深反射增强是( )运动神经元损害的表现。
A.
上
B.
左
C.
下
D.
右
查看完整题目与答案
【单选题】支持确认上运动神经元损害的表现是( )。
A.
腱反射减弱或消失
B.
肌张力低
C.
腹壁反射消失
D.
病理反射阳性
E.
节段性肌萎缩
查看完整题目与答案
【简答题】What are the three negotiable instruments and three common modes of international trade settlement? Please write down both the English terms and their Chinese meanings.
查看完整题目与答案
【简答题】What are negotiable instruments? What are characteristics of negotiable instruments? What are functions of negotiable instruments? What kind of the Negotiable Instruments we currently used?
查看完整题目与答案
相关题目：
【单选题】上运动神经元损害的表现为
A.
痉挛性瘫,腱反射消失
B.
痉挛性瘫,腱反射亢进
C.
完全性瘫,腱反射亢进
D.
弛缓性瘫,腱反射消失
E.
完全性瘫,腱反射存在
查看完整题目与答案
【多选题】What is a correct statement about negotiable securities?
A.
They are aimed to pay in money.
B.
They must be signed by the issuer.
C.
Unconditionally paid by the issuer or another person.
D.
They are tile documents.
查看完整题目与答案
【单选题】What bills are negotiable?什么票据是可以背书流通的?
A.
Pay to John David only
B.
Pay to John David not transferable
C.
Pay to the order of ABC Co.
D.
Pay to bearer.
查看完整题目与答案
【判断题】( )零件图未注出公差的尺寸,就是没有公差要求的尺寸。
A.
正确
B.
错误
查看完整题目与答案
【简答题】Task 3 Listen to Andy’s report on the release plan of the new hair care product. Decide whether the statements are true (T) or false (F) according to what you hear. ( ) 1. The newly released shampoo s...
查看完整题目与答案
【单选题】What are required for the foreign importer to clear the goods through customs?
A.
A negotiable bill of lading.
B.
Related documents.
C.
Both of the above.
D.
None of the above.
查看完整题目与答案
【单选题】深反射增强是( )运动神经元损害的表现。
A.
上
B.
左
C.
下
D.
右
查看完整题目与答案
【单选题】支持确认上运动神经元损害的表现是( )。
A.
腱反射减弱或消失
B.
肌张力低
C.
腹壁反射消失
D.
病理反射阳性
E.
节段性肌萎缩
查看完整题目与答案
【简答题】What are the three negotiable instruments and three common modes of international trade settlement? Please write down both the English terms and their Chinese meanings.
查看完整题目与答案
【简答题】What are negotiable instruments? What are characteristics of negotiable instruments? What are functions of negotiable instruments? What kind of the Negotiable Instruments we currently used?
查看完整题目与答案