题目

A new study has found some secrets of people’s understanding of large numbers.Researchers studied a group of people who were born deaf and never learned any spoken language or a formal sign language, but they have developed a gesture system to communicate with people around them. The gestures let them express approximate amounts, but not exact numbers. “Up to three, they’re fine,” says Elizabet Spaepen, a researcher at the University of Chicago and an author of the study. “But past three, they start to fall apart.” In one test, Spaepen would knock her fist against a study p氮的固定一直是科学家研究的重要课题，合成氨则是人工固氮比较成熟的技术，其原理为:N2(g)+3H2(g)2NH3(g) △H（1）已知破坏1mol共价键需要的能量如表所示H-HN-HN-NN≡N435.5kJ390.8kJ163kJ945.8kJ则△H=__________。（2）在恒温、恒压容器中，按体积比1:3加入N2和H2进行合成氨反应，达到平衡后，再向容器中充入适量氨气，达到新平衡时，c(H2)将__________（填“增大”、“减小”、或“不变”，后同）；若在恒温、恒容条件下c(N2)/c(NH3)将________。（3）在不同温度、压强和使用相同催化剂条件下，初始时N2、H2分别为0.1mol、0.3mol 时，平衡混合物中氨的体积分数（φ）如图所示。①其中，p1、p2和p3由大到小的顺序是_______，原因是___________________。②若在250℃、p1条件下，反应达到平衡时的容器体积为1L，则该条件下合成氨的平衡常数K=____(结果保留两位小数)。（4）H2NCOONH4是工业由氨气合成尿素的中间产物。在一定温度下、体积不变的密闭容器中发生反应H2NCOONH4(s)2NH3(g)+CO2(g),能说明该反应达到平衡状态的是_____（填序号）①每生成34g NH3的同时消耗44g CO2 ②混合气体的密度保持不变 ③NH3的体积分数保持不变 ④混合气体的平均相对分子质量不变 ⑤c(NH3):c(CO2)=2:1（5）科学家发现，N2和H2组成的原电池合成氨与工业合成氨相比具有效率高，条件易达到等优点。其装置如图所示、写出该原电池的电极反应：________________、_____________，若N2来自于空气，当电极B到A间通过2molH+时理论上需要标况下空气的体积为_________（结果保留两位小数）。