A carbonyl compound has a molecular ion with an m/z of 86. The mass spectra of this compound also has a base peak with an m/z of 57. Draw the correct structure of this molecule.

Draw the structure that fits each spectrum and assign each CHx group to appropriate peaks. (reference point at 0 ppm)

Given the parent compound, draw the mass spectrum fragment that is observed at m/z 43. Draw the fragment. Include hydrogen atoms and the positive charge. Select ✓ Draw C Rings H More Erase Q2 Q

The mass spectrum for acetophenone is shown below. a) Where does the molecular ion show up? ?) b) Which peak is the base peak? ? 1) The mass spectrum for acetophenone is shown below. Relative Intensity 100- 80- 20- acetophenone 0-tyttim 20 10 30 40 50 60 77 trommlilily 70 m/z 80 90 100 105 Ć 110 120 120 a) Where does the molecular ion show up? (m/z = ?) b) Which peak is the base peak? (m/z = ?) c) Draw the structure of the charged species responsible for the peak at m/z = 120. d) Draw the structure of the charged species responsible for the peak at m/z = 105. e) Draw the structure of the charged species responsible for the peak at m/z = 77.

Which structure is most consistent with the proton NMR spectrum shown below?

A compound and its ¹H-NMR spectrum are shown below. Assign peak 1 and peak 2 in the spectrum to the hydrogen(s) labeled in red. i. a H3C- 10 C4H8O₂ Compound C b c -O—CH,CH3 2006 Brooks/Cole Thomson Submit Answer C 9 ↑ Which labeled hydrogen(s) correspond to each peak? peak 1: peak 2: 8 7 6 2H 5 Chemical Shift (8) Peak 3 Retry Entire Group 6 more group attempts remaining 3. 3H Peak 2 3H Peak 1 0 ppm

1. How many different sets of equivalent aromatic (benzene ring) carbons can be seen in the 13C NMR spectrum of your unknown monosubstituted benzene starting material? A. Are there any peaks for non-aromatic carbons in the 13C NMR spectrum of your unknown monosubstituted benzene starting material (yes or no)? B. If yes for part A, please list the corresponding ppm value(s) for any non-aromatic carbon(s)?

9. The mass spectrum of which compound has an M+2 peak that has intensity that is about 25% of its M+ peak? A) 3-bromopentane B) 3-pentanol C) pentane D) 3-chloropentane E) 3-iodopentane

Hello can someone please help and check my work

4. Ethyl acetate gives a base peak at m/z 43, and a peak at m/z 61. Draw the structures of the fragments that give rise to these peaks. H₂C CH3