22. A first-order reaction is 54% complete at the end of 12 min. What is the value of the rate constant? (A)6.5 × 10-2 min-1 (B)0.33 min-1 (C)0.065 min-1 (D)5.1 × 10-2 min-1

8. A Lewis dot structure for benzene, C6H6 would give two equivalent resonance structures for this cyclic molecule with alternating single and double bonds. A combined LCAO and MO picture for the bonding of the carbon atoms in benzene would be (A)1σ(Csp2-Csp2) bonds between each C atom, and 3π MO delocalized over the C's (B)2σ(Csp3-Csp3) bonds between each C atom, and 1π MO delocalized over the C's (C)1σ(Csp3-Csp3) bonds between each C atom, and 1π MO delocalized over the C's (D)1σ(Csp2-Csp2) bonds between each C atom, and 2π MO delocalized over the C's (E)3σ(C2p-C2p) bonds between each C atom

22. A first-order reaction is 54% complete at the end of 12 min. What is the value of the rate constant?
(A)6.5 × 10^-2 min^-1
(B)0.33 min^-1
(C)0.065 min^-1
(D)5.1 × 10^-2 min^-1

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