16. Identify the resonance hybrid for CH2=CHCH=CHCH2*. %3D II IV V A. В. C. D. Е. 17. Caffeine has the following structure. Identify the hybridization and molecular geometry at the indicated atoms. | = sp, trigonal pyramidal; Il = sp', trigonal pyramidal Il = sp', trigonal planar Il = sp?, trigonal pyramidal Il = sp, trigonal planar Il = sp, trigonal planar A. %3D В. | = sp³, trigonal planar; C. | = sp?, trigonal pyramidal; D. |= sp?, trigonal planar; Е. | = sp', trigonal pyramidal; 18. Which of the following compounds is most acidic? он он NH2 HO NH2 II IV -==>>

Why the extended Pi(π) conjugated are suitable for Fluorescence properties? Please shortly answer at your own words. Answer should be to the point(3-4 lines)

Problem The adiameterof metal wire is often refered to by its American zauje wire hes a diameter of 0,05082 lof wire number. A 16- gavge inches. what leng th of wire ,in metej, is there in an l.00b'spool 16-3auge cooper wire. The density of cooper is 8.922glcm'. Vaylinde = Trth (1b =4549) (1 in = 254cm) 123454)1 in =2.540 %3D cylinder

Part A Mark with the green check to indicate that the given direction of electron flow in the following set of molecules using curved arrows notation is correct and with the red X label to indicate when incorrect. Drag the appropriate labels to their respective targets. ► View Available Hint(s) X X X H₂C X CH₂ H₂C Reset Help You labeled 2 of 7 targets incorrectly. Electrons can only be shown to migrate if there is an atomic p orbital to move them to. Moving a lone pair electrons to form a new π bond can only occur if the atom accepting