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Which of the following statements correctly applies Hückel's rule to the molecules shown below? -CH=CH2 H...
Which of the following statements correctly applies Hückel's rule to the molecules shown below? Molecule 4 is weakly basic, therefore it cannot be aromatic. Molecule 5 has 8 electrons Otherefore it cannot be aromatic Molecule 2 is not a hydrocarbon; therefore it cannot be aromatic. Molecule 3 is not completely conjugated; therefore it cannot be aromatic Molecule 1 is not monocyclic; therefore it cannot be aromatic
5. Which of the following statements correctly describes the molecule shown below? CH H A) It is achiral. B) It is meso. C) Its asymmetric center possesses the R configuration. D) The mirror image of this molecule is its enantiomer. E) The molecule possesses enantiotopic hydrogens.
30) Which of the following is the most stable diene? L. IV. A)I B) C)III D)IV E) V 31) Which of the following is an aromatic hydrocarbon? IV -CH A)I B C)ID)IVE) V 32) Which of the following conjugated dienes will not react with a dieneophile in a Diels-Alder reaction? Π. IV A) I B)11 C)111 D) IVE) I and III 33) The conjugate acid of the compound shown below is B) aromatic D) antiaromatic. E) none of the above....
Which of the following is correct concerning the molecule shown below O CH2-0-C O CH-O-C (CH)N-CH,CH-0--o-CH A. it is ampipathic B. it is a sphingolipid OC. it is a phosphoglyceride D. it is a component of biological membranes O E. A, B, & D F. A, C, & D Which of the following is correct concerning the molecule shown below O CH2-0-C O CH-O-C (CH)N-CH,CH-0--o-CH A. it is ampipathic B. it is a sphingolipid OC. it is a phosphoglyceride D....
Which of the following reactions will produce the molecule shown below? CH3(CH2)3–0–—CH, CH3 CHCH2)3 + HOẠC–CH2CH, CH2CH2)3-0–CH + H2C-CH3 CH3 (CH2)3-OH + HO—C—CH2CH3 CH3(CH2)3-OH + HC-CH2CH3
LES BELOW FOR QUESTIONS 23-28. CH3 F. CH2-CH2-C J. СН 3-C-OH H. NH2-C-NH2 G. CH3-CH2 9 CH3 K. CH3 -CH2-CH2-c M. CH3-CH-CH3 L. CH3-C-O-C H3 NH2 N.0%-O- (CH2)5-CMg P. CH3-C-CH3 S. CH3-CH2-N CH3-CH-CH3 CH3 CH3 CH3-CH2-C-CH 3 CH3 Х. V. W. CH3-CH-CH-CH2-CH2-CH2 CH3 -CH- CH2 CH2-CH3 C2Hs CH3-CH- C-CH2-CH3 AA. -(CH 2- CH)- Z. -(CH2-CH) CH3-CH2-CH-CH3 CH3 он но AB. -(CH2 - CH)- Ac.-|-o-(CH 2)40-C-N-(CH2)6N-C- 23. Which molecule would produce a ketone when oxidized? a. F b. G c. J...
Which of the following functional groups is not found in the D) molecule shown in Figure 2? Он SH amide i) other iii) alkene iv) alkyne v) ester vi) thiol vii) i-vi are all present in the molecule R-0-2 NH Figure 2 E) Which of the following is not found in the molecule shown in Figure 3? но i) secondary alkyl halide i) primary alcohole ii primary carbon V quaternary carbon v) tertiary alkyl halide vi) tertiary alcohol vii)i-vi are...
3. Of the following structures, how many are classified "? H2C H3C CH2CH3 H3C CH=CH2 H CH Cl Cl Cl CH=CH2 H3C H2CH3 A) 1 B) 2 C) 3 D) 4 E) 5 How many stereogenic centers are present in the following molecule? CHCHCH3 OH H3C A) 1 B) 2 C) 4 D) 6 E) 8
5. The correct designation of the bonds which links the CH to the CH, in CH=CH-CH, is: (a) sp'-sp' sigma (b) sp-sp' sigma (c) sp-sp' sigma, p-p pi (d) sp -sp.sigma, p-p pi (e) sp-sp'pi. p-p sigma (1) sp-sp' pi 6. Write the hybridization state (sp. sp', spl) beside each of the indicated atoms. ALL atoms and lone pair electrons are shown. D Η-ΝΗ H H HC . 0 + C- C " | Н Н 0. Е 7. State...
please answer questions 9-12 Question 9 1 pts Which of the following statements describes the reactivity of alkynes? An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. When a symmetrical internal alkyne reacts with HBr, two products are formed. Unlike alkenes, alkynes fail to undergo electrophilic addition reactions The o bonds of alkynes are greater in energy than the rt bonds and, therefore, are more reactive Alkynes react as electrophiles, whereas alkenes react as nucleophiles What is...