【单选题】How do you know when to call for help? According to experts, the key in any emergency is to remain calm, know what to do, and make a decision to act.
【简答题】在 298K 时,反应 N 2 O 4 (g) = 2NO 2 (g) 的 K p Ɵ =0.1132 ,当 p (N 2 O 4 ) = 1kPa, p (NO 2 ) = 5kPa 时反应将向 ____ _ ___ 移动。当 p (N 2 O 4 )=5kPa , p (NO 2 )=1kPa 时,反应将向 ____ ____ 移动。