13. HBr can be added to an alkene in the presence of peroxides(ROOR). Whatfunction does the peroxide
14. Which of the following terms best describes the reactive nature of a Grignard reagent?(A) carboc
15. The mass spectrum of alcohols often fail to exhibit detectable M peaks but instead show relative
16. Absorption of what type of electromagnetic radiation results in transitions among allowed nuclea
18. An NMR spectrometer that operates at a frequency of 60 MHz for C NMR spectra, operates at what f
21. The proton NMR spectrum of an unknown compound contains a triplet at 9.8 ppm. Which of the follo
22-Which of the following is also known as a Schiff base?(A) an imine(B)a cyanohydrin (C) a hydrate(
23. Carboxylic acids boil at considerably higher temperatures than do alcohols, ketones, or aldehyde
24. The hydrolysis of esters in base is called:(A) the Fischer esterification.(B) the Hunsdiecker re
25. Peptide bonds are:(A) ester linkages.(B)imido linkages.(C) ether linkages. (D) amide linkages. (
27. To a solution of propyne in diethyl ether, one molar equivalent of CH3Li was added and the resul
28. Whidi of the following metric relationships is incorrect?^(A) 1 microliter = 10-6 liters(B) 1 gr
29. A method of separation that employs a system with two phases of matter, a mobile phase and a sta
30. You take an aspirin tablet (a compound consisting solely of carbon, hydrogen, and oxygen) with a
31 • Which of the following electrode could be a reference electrode exceptg(A) SHE(B)NHE(C) SCE(D)A