Answer (A)
A is more stable, inspite both compounds having resonance but alpha hydrogen is more in (A).
? Which on of the following is more stable + HC HAC B : Select one...
need help in this 5Q
The molecule of n-butane contains localized bonds Select one: O True O False Which one is the correct order of stabilities? o O-O+ H2C=CH-C-H H3C EC-H ΙΩ H3C -C H FC-H А B Select one: O a. A CB b. BCA O c. A-B-C O d. c-A-B O e. None Which on of the following is more stable? + + HC H3C B Select one: a. A O b.B O c. Both A and B...
What is the best choice of reagent to achieve the following reaction? Br HC, -CH₃ Hac. -CH3 ? a. NaBr b. HBr. H2O C. Br2 O d. NBS, heat
which of the following carbocations can undergo a hydride
shift to be more stable than it was?
Which of the following carbocation(s) can undergo a hydride shift to be more stable than it was? which of the follow do y como Select one: a. Carbocationc b. none of the carbocations c. Carbocation a O d. Carbocation d e. Carbocation b
Which of the following is true of transcription, but not replication? Select one: a. It requires polymerase to catalyze the process. b. All of these are true for both transcription and replication. c. It requires promoters to initiate the process. d. It requires a primer to initiate the process. Clear my choice Question 6 Not yet answered Marked out of 1.00 Flag question Question text Which of the following is/are true of promoters? Select one: a. they contain both exons...
Which of the following carbocations is the least stable? Do uhradar Select one: O a. carbocation b © b. carbocation d O c. carbocationc d. None of the above e. carbocation a YHLE
given
Which is more stable? Position A/ Position B (circle one) COOH COOH Which is more stable? Position A/ Position B (circle one) 9. Given the results of the previous problems, if an ELECTRON DONATING group is already attached to benzene, it is more stable to add the electrophile to the _position(s). Look at positions A and B in the previous problems. a. Ortho b. Meta C. Para d. Two of the above e. None of the above 10. If...
Which of the following is not true about a water molecule? Select one: a. Contains polar covalent bonds because oxygen is more electronegative than hydrogen b. Has a bent shape c. Is made up of ions d. Has a permanent dipole, a separation of positive and negative charges Clear my choice
Which of the following is FALSE regarding the process of rusting? Select one a. electrochemical cell results in which iron serves as both an anode and a cathode b. aqueous solution of ions serves as a "salt bridge" c. oxygen gas is the cathode d. an electrochemical cell results in which iron serves as the anode e. pitting or erosion of iron results Clear my choice
Which one is the correct order of stability for the ?following alkenes HC сна HC CH HC HC B A B с Select one a. A >C>B b. B >C> A c. A>B>C d. C>A>B
Which of the following shown below represent a pair of enantiomers? CN (a) Br HAC-C-CN (b) CO2H HC-Br HC-CH? Br HC-CN CO2H (c) (d) CO2H CH3 он H -OH HC-CH2CH3 CH3CH H3C CH3 -CO2H H H2N H3C CH H2N 2 o