题目

425℃时,向某VL的密闭容器中充入2molH2(g)和2molI2(g)发生反应: H2(g)+I2(g) 2HI(g) =-26.5kJ/mol,测得各物质的物质的量浓度与时间变化的关系如图所示。请回答下列问题: （1） V=. （2） 该反应达到最大限度了的时间是,该时间内平均反应速率v(HI)=。 （3） 该反应达到平衡状态时,(填“吸收”或“放出”)的热量为。语法填空阅读下面的材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。One morning, I was waiting at the bus stop, worried about 【1】_____ (be) late for school. There were many people waiting at the bus stop, 【2】______ some of them looked very anxious and 【3】____(disappoint) . when the bus finally came, we all hurried on board. I got a place next 【4】________ the window, so I had a good view of the sidewalk. A boy on a bike【5】_____ (catch ) my attention. He was riding beside the bus and waving his arms. I heard a passenger behind me shouting to the driver, but he refused 【6】______(stop) until we reached the next stop. Still, the boy kept 【7】_______(ride). He was carrying something over his shoulder and shouting. Finally, when we came to the next stop, the boy ran up the door of the bus. I heard an excited conversation. Then the driver stood up and asked,“【8】_______ anyone lose a suitcase at the last stop?” A woman on the bus shouted, “Oh, dear! It’s 【9】________ (I)”. She pushed her way to the driver and took the suitcase thankfully, Five others on the bus began talking about what the boy had done and the crowd of strangers 【10】_______(sudden) became friendly to one another.