在恒温恒容条件下,向容积为2L的密闭容器中充人2. O mol SO 2 和2. O mol O 2 。巳知: ,经2 min达到平衡状态,反应放热0. 25a kJ。下列判断正确的是 A 在1 min时: B. 2 min内: C. 若再充入2mol SO 3 ,达平SO 3 %(质量分数)减小 D. 反应条件相同,若起始时向反应容器中充入2mol SO 3 ,平反应吸热0. 75a kJ
【简答题】听力 1. How did the man feel? A. He was proud. B. He was very nervous. C. He was very excited 2. What does the woman mean? A. The man should do his homework B. The man should go to see a movie. C. The m...