第1題WhichofthefollowingisavalidLewisdotformulaforthenitriteion(NO2-)?ABCDNoneofabove第2題

WhatisthehybridizationstateoftheboronatominBF3?AsBpCspDsp2第3題AsBpCspDsp2Esp3正確答案：E第4題A-2B-1C0D+1E+2第5題Thecorrectbond-lineformulaofthecompoundwhosecondensedformulaisCH3CHClCH2CH(CH3)CH(CH3)2is

ABCD第1題Whichofthefollowingisthestrongestacid?ABCD第2題Whichofthefollowingisthestrongestbase?ABCD第3題DissolvingNaNH2inwaterwillgive:ABCDE第4題Whichbaseisstrongenoughtoconvert(CH3)3COHinto(CH3)3CONainareactionthatgoestocompletion?ABCDE正確答案：E第5題Whichwouldbethestrongestacid?ABCDE第6題Whichwouldbetheweakestbase?ABCDorganicchemistry第1題ABCDE第2題SelectthecorrectnameofthecompoundwhosestructureisABCDE第3題SelectthecorrectnameofthecompoundwhosestructureisABCDE第4題Forwhichreactionwouldthetransitionstatemostresembletheproducts?ABC第5題HowmanyisomersarepossibleforC3H7Br?A1B2C3D4organicchemsitry第1題Whichisthelowestenergyconformationoftrans-1,4-dimethylcyclohexane?ABCD第2題SelectthecorrectnameofthecompoundwhosestructureisABCDE第3題SelectthecorrectnameofthecompoundwhosestructureisABCDEorganicchemistry第1題Whichisthelowestenergyconformationoftrans-1,4-dimethylcyclohexane?ABCD第2題Whichisomerof1,3-dimethylcyclohexaneismorestable?AcisBtransCbothareequallystable

Dimpoorganicchemistry第1題Whatwouldbetheproductofthefollowingreaction?ABCD第2題Whichhydrogenatomsinthefollowingesteraremostacidic?AaBbCcDdEe第3題WhatstartingmaterialcouldbeusedinacrossedClaisencondensationtopreparethefollowingcompound?ABCD第4題organic第1題themajorproductofthereaction

____正確答案：:b第2題GivesystematicIUPACname____forthefollowingcompound

正確答案：:(2E,5E)-6-bromo-2,3-dichloro-2,5-heptadiene第3題Whichratewillbelargerasthesolventpolarityincreases?ABCD第4題ABCDE正確答案：E第5題AO3,thenZn,HOAc,thenAlCl3,thenCH3CO2HBH2SO4,HgSO