36.[化学 — —选修5:有机化学基础](15分)化合物H是合成某药物的中间体,合成H的一种路线如下:CH_2BrCH_2Br ,CH =CH Nu CH =CNa OH OCONH2液氨5A BC i.液氨OH j酸化 C =CH ii. NH, C =CH hCHO ,CHnO CH催化剂D EF0ONa OH I已知:R1 C-R2+R,-C= C -Na液氨R1-C-C= C -R...
From infrared data these states are predicted to be close in energy (2nu 6 - nu 5 = 10 cm -1 ) and both a Fermi resonance and a third-rank Coriolis resonance between them have been considered in the analysis of the rotational spectra. The 35 Cl quadrupole coupling constants have been ...
百度试题 结果1 题目22下列分子中,哪些是以极性键结合的,哪些是以非极性键结合的? (1) F2 (2) 02 (3) NU, (4) CH, (5) SO2相关知识点: 试题来源: 解析 22反馈 收藏
Migratory insertion and CO substitution reactions of the β,γ-unsaturated esters and amides [Fe 2 (CO) 5 (μ-PPh 2 )(μ-η 1 :η 2 -{NuC(O)CH 2 }C CH 2 }] (Nu=OMe, OEt, OPr i , NHPh, NHBu t ): synthesis and characterisation of acyl-bridged [Fe 2 (CO) 4 ...
二、 选择正确的字母组合补全下列单词。 () 1. t ed A. or B. ir C. ur () 2. h gry A. nu B. un C. on () 3. irsty A. th B. sh C. ch () 4. c d A. lo B. ol C. ir () 5. 1. ch A. en B. un C. on () 6. ma er A. oo B. ff C. tt...
(1)F2(2) 02(3) NU,(4) CH,(5) SO2 相关知识点: 试题来源: 解析 【解析】 22 8.(1)$$ F _ { 2 } $$ 非极性键 (2)$$ O _ { 2 } $$ 非极性键(3)$$ N H _ { 3 } $$ 极性键 (4) $$ C H _ { 4 } $$极性键 (5)SO_{2}极性键 【解析】极性键存在于不同...
m___nu( )7. A. ri___t B. enou___C. li___t D. hi___( )8. A. b___rrow B. c___llect C.___ften D. v___lleyball( )9. A. begi___B. k___ow C. autum___D.___ose( )10. A. w___ther B. h___vy C. ch___p D...
百度试题 结果1 题目【题目】四、读一读,再组词(8分)8/(11)2hong();2hing(). K_2(CH_2O) 2huacksim▱;(n+1)/2nuon(). 8/5*() 相关知识点: 试题来源: 解析 【解析】四、中华中奖长城长大转身转圈扇子扇风 反馈 收藏
选一选。 刺猬 A. w 5 n nu 3 n 团长 B. ch 3 o n 4 o 吵闹 C. tu 2 n zh 3 n g 温暖 D. c @ wei 下载作业帮APP学习辅导没烦恼 答案解析 结果1 举报 答案:D;C;B;A APP内打开 热点考题 同步经典题专项精练 29925 基础·培优·进阶同步分层作业 16728 小学解题模型 21800 猜你...
天梯山石窟,位于甘肃省武威市城张义镇,云冈石窟、龙门石窟的源头,有“石窟鼻祖”之称。【China Gansu Show】Tiantishan Grottoes: the Earliest Grottoes.Tiantishan Grottoes, known as the “Earliest Grottoes”, located at Zhangyi County of Wuwei, Gansu, is ...