【单选题】听力原文:W: Have you got any tickets for The hord of the Rings for this Sunday evening? M: What time? 6:30 p.m.or 9:00 p.m.? W: 9:00, please. M: Right. Two tickets at 8 pounds, Sunday, 9:00 p.m. Your name...
【单选题】On Sunday, I' m going to go and ()my parents.
【简答题】(14分)工业制硝酸的主要反应是4NH 3 (g)+5O 2 (g) 4NO(g)+6H 2 O(g)ΔH=-akJ/mol(a﹥0) (1)如果将4molNH 3 和5molO 2 放入容器中,达到平衡时,放出热量0.8akJ,则反应时转移的电子数为 mol (2)若其他条件不变,下列关系图中错误的是 (选填序号) (3)t℃时,在容积固定的密闭容器中发生上述反应,容器内各物质的浓度如下表 浓度...
【简答题】气体的粘度随温度升高而 ,水的粘度随温度升高而 。A. 增加B. 降低