(2) _ ,
(3) ________________________________________________________________________ (Ⅱ).
(1) ________________________, ________________________________________
(2) ___________________________________________________________________,
______________________________________________________________________
(3) ________________________________________________________________________
(4) ________________________________________________________________________
28. (1) ①△H __________0 ②__________________________________________________
③ __________________________________________________________________________。
(2) ① K=___________________________________。
② 如右图:
③ ___________________________________________。
(3)_________________________________________________________________________________
29. ⑴ _________________________
⑵ ________________________________________;
⑶ ___________________________________________和_______________________________________。
⑷ _____________________________________;
⑸ _____________________________________________________________________________;
⑹ ______________________________________________________________________________;
⑺___________________________________________。
30.
(1)
(2)
(3)①
②
③
31.
(2)实验步骤
① ②
③ ④ (3) 32.(12分)
(1) (2) (3)
(4) (5)