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已知 ：N 2 (g)+3H 2 (g) 2NH 3 (g)   ΔH＝－92 kJ·mol －1 。 （1） 在500℃、2.02×10 7 Pa和铁催化条件下2L密闭容器中充入1molN 2 和3mol H 2 ，10 min时达到平衡，有0.2 mol NH 3 生成，则10 min内用氢气表示的该反应的平均速率v(H 2 )为 ，H 2 的转化率为__________。 （2）充分反应后，放出的热量______(填“”“=”)92.4kJ，理由是 。 （3）为有效提高氢气的转化率，实际生产中宜采取的措施有____________ A．降低温度 B．不断补充氮气 C．恒容下充入He来增大压强 D．升高温度 E．原料气不断循环 F．及时移出氨 （4）氨催化氧化制NO在热的铂铑（Pt-Rh）合金催化下进行，反应过程中合金始终保持红热，该反应的化学平衡常数K的表为________________ ，当升高温度时，K值______（填“增大”、“减小”、“不变”）。NH 3 转化率在温度T 1 下随反应时间（t）的变化如右图：其他条件不变，仅改变温度为T 2 （T 2 大于T 1 ），在答题卡框图中画出温度T 2 下NH 3 转化率随反应时间变化的预期结果示意图。
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【单选题】()铬,铜的保有资源储量,盐湖锂矿资源远景储量及高温地热储量在全国排名第一P163
A.
四川
B.
云南
C.
西藏
D.
青海
查看完整题目与答案
【单选题】Which of the following is NOT true according to the passage?
A.
Thomas Edison invented more than one thousand things in his life.
B.
Thomas Edison mostly taught himself, although his mother also taught him some things.
C.
Thomas Edison invented a vote recorder and turned out to be a great success.
D.
Thomas Edison always worked for a long time and even forgot to sleep and eat.
查看完整题目与答案
【单选题】Thomas Edison invented
A.
the train
B.
the steam engine
C.
the phonograph
D.
the camera
查看完整题目与答案
【单选题】汽油机润滑油的选择,应根据发动机的结构性能和使用条件选择相应的润滑油质量等级,再根据使用地区的气温选择润滑油( )等级。
A.
抗氧化
B.
抗磨
C.
抗腐蚀
D.
粘度
查看完整题目与答案
【单选题】下列为密螺旋体属代表菌的是:
A.
钩端螺肇体
B.
梅毒螺旋体
C.
回归热螺旋体
D.
Lyme螺旋体
E.
奋森螺旋体
查看完整题目与答案
【判断题】暗柱箍筋在墙两侧面与墙水平贯通筋在同一层面,其竖向纵筋与墙竖向贯通筋不在同一层面。
A.
正确
B.
错误
查看完整题目与答案
【单选题】色彩对比现象的形成,至少需要几种以上的色彩?
A.
3
B.
5
C.
2
D.
4
查看完整题目与答案
【单选题】下列为密螺旋体属的是:
A.
梅毒螺旋体
B.
钩端螺旋体
C.
Lyme螺旋体
D.
回归热螺旋体
E.
以上都是
查看完整题目与答案
【单选题】The telephone was invented by Thomas Edison.
A.
Right
B.
Wrong
C.
Doesn't say
查看完整题目与答案
【单选题】Which of the following statements is in the right order for Thomas Edison?
A.
He became a telegraph operator, a newsboy, and then got his first patent.
B.
He became a newsboy, got his first patent, and then became a telegraph operator.
C.
He got a patent, became a telegraph operator, and then became a newsboy.
D.
He became a newsboy, a telegraph operator, and then got a patent.
查看完整题目与答案
相关题目：
【单选题】()铬,铜的保有资源储量,盐湖锂矿资源远景储量及高温地热储量在全国排名第一P163
A.
四川
B.
云南
C.
西藏
D.
青海
查看完整题目与答案
【单选题】Which of the following is NOT true according to the passage?
A.
Thomas Edison invented more than one thousand things in his life.
B.
Thomas Edison mostly taught himself, although his mother also taught him some things.
C.
Thomas Edison invented a vote recorder and turned out to be a great success.
D.
Thomas Edison always worked for a long time and even forgot to sleep and eat.
查看完整题目与答案
【单选题】Thomas Edison invented
A.
the train
B.
the steam engine
C.
the phonograph
D.
the camera
查看完整题目与答案
【单选题】汽油机润滑油的选择,应根据发动机的结构性能和使用条件选择相应的润滑油质量等级,再根据使用地区的气温选择润滑油( )等级。
A.
抗氧化
B.
抗磨
C.
抗腐蚀
D.
粘度
查看完整题目与答案
【单选题】下列为密螺旋体属代表菌的是:
A.
钩端螺肇体
B.
梅毒螺旋体
C.
回归热螺旋体
D.
Lyme螺旋体
E.
奋森螺旋体
查看完整题目与答案
【判断题】暗柱箍筋在墙两侧面与墙水平贯通筋在同一层面,其竖向纵筋与墙竖向贯通筋不在同一层面。
A.
正确
B.
错误
查看完整题目与答案
【单选题】色彩对比现象的形成,至少需要几种以上的色彩?
A.
3
B.
5
C.
2
D.
4
查看完整题目与答案
【单选题】下列为密螺旋体属的是:
A.
梅毒螺旋体
B.
钩端螺旋体
C.
Lyme螺旋体
D.
回归热螺旋体
E.
以上都是
查看完整题目与答案
【单选题】The telephone was invented by Thomas Edison.
A.
Right
B.
Wrong
C.
Doesn't say
查看完整题目与答案
【单选题】Which of the following statements is in the right order for Thomas Edison?
A.
He became a telegraph operator, a newsboy, and then got his first patent.
B.
He became a newsboy, got his first patent, and then became a telegraph operator.
C.
He got a patent, became a telegraph operator, and then became a newsboy.
D.
He became a newsboy, a telegraph operator, and then got a patent.
查看完整题目与答案
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