【单选题】298K反应BaCl 2 · H 2 O(s)=BaCl 2 (s)+H 2 O(g)达平衡时, p (H 2 O)=330Pa。则反应的△rGmθ为( )。
【单选题】Learning to write in a new language is a difficult______.
【多选题】以下是国际标准化组织推荐使用的运输标志构成内容的是( )。
【单选题】在 298K 反应 BaCl 2 ·H 2 O(s) = BaCl 2 (s) + H 2 O(g) 达到平衡时, p (H 2 O)=330Pa ,则反应的 △ r G Ө m 为( )。
【单选题】298 K时,反应BaCl2·H2O(s)=BaCl2(s)+H2O(g),达平衡时PH2O=330 Pa,则反应的ΔrGmӨ为 ()
【单选题】在 298K 反应 BaCl 2 · H 2 O ( s ) =BaCl 2 ( s ) +H 2 O ( g )达平衡时, p ( H 2 O ) =330Pa ,则反应的∆ r G m θ 为( )
【单选题】298 K时,反应BaCl2·H2O(s)=BaCl2(s)+H2O(g),达平衡时p(H2O)=330 Pa,则反应的ΔrGmӨ为( )
【单选题】( )是就某一特定主题展开讨论的聚会,可以单独召开,也可以附带展示会,可包括全体大会和小组会议,通常一年一次周期性举行。
【简答题】Learning to write in a new language is a difficult _____.
【单选题】(2 ) Learning how to write is similar to learning how to speak in public in that writer should _____.
A.
overcome his or her nervousness in the first place
B.
take hold of a reader and talk to him or her before writing
C.
learn to use a typewriter or dictating machine
D.
talk to himself on paper