问题
选择题
符合如图意义的反应是( ) A.2HI(g)⇌I2(g)+H2(g);△H<0 B.N2(g)+3H2(g)⇌2NH3(g);△H<0 C.Fe3+(aq)+3H2O(l)⇌Fe(OH)3(胶体)+3H+;△H>0 D.C(s)+CO2(g)⇌2CO(g);△H>0 ![]() |
答案
答案:C
符合如图意义的反应是( ) A.2HI(g)⇌I2(g)+H2(g);△H<0 B.N2(g)+3H2(g)⇌2NH3(g);△H<0 C.Fe3+(aq)+3H2O(l)⇌Fe(OH)3(胶体)+3H+;△H>0 D.C(s)+CO2(g)⇌2CO(g);△H>0 ![]() |
答案:C
补全对话(根据已给出的内容,补全对话。每题2分,共10分。) A:Good afternoon. May I 小题1: ________________ _______________ ? B.Yes. 小题2: _________________ vegetables in the beef soup? A:Yes. There are some tomatoes. . B: OK. We’d like one bowl of beef soup.
B: Large, please. C: We’d also like gongbao chicken and some mapo tofu with rice. A: OK. 小题4:____________________________________, one gongbao chicken and one mapo tofu with rice. B:Yes, 小题5: _____________________________ . |