Which molecule(s) contain(s) no aromatic ring(s)? There may be more than one. NH2 A B C D E

Which structure is NOT aromatic? CH CH

Dr and name all possible aromatic compounds with the formula C8H9Br (There are 14)

Determine if the following compounds are aromatic, non-aromatic, or anti-aromatic. Show a structure that helps to support your classification. This structure should not just redraw the compound; show lone pairs, resonance, and/or contributing π bonds as part of your explanation.

Molecule A Molecule B Molecule A Molecule C Molecule D H₂C: Molecule C Which of the compounds shown is aromatic? CH₂ Molecule B Molecule D

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From what we know today, what do the two Kekulé structures for benzene really represent? August Kekulé was the first person to propose a viable structure for benzene in 1865. Structures that can be separated at low enough temperatures (near absolute zero). Structures that are in a state of rapid equilibrium. O Structures that are in resonance. Structures that are conjugated trienes (--C=C--C%3DC--C3C--).

QUESTION 7 Which of the following is not true about anti-aromatic molecules? Anti-aromatic molecules must have 4N+2 pi electrons where N = 0, 1, 2, 3.... Anti-aromatic molecules must be cyclic Anti-aromatic molecules have to be planar Anti-Aromatic molecules are unstable compared to non-aromatic molecules

Estimate the heat released when 1-butene(CH3CH2CHCH2) reacts with bromine to give CH3CH2CHBrCH2Br. Bond enthalpies are CH : 412 kJ/mol;   CC : 348 kJ/mol;CC : 612 kJ/mol;  CBr : 276 kJ/mol;BrBr : 193 kJ/mol. 1.317 kJ/mol 2.507 kJ/mol 3.95 kJ/mol 4.288 kJ/mol 5.181 kJ/mol