Which of the following compounds will have odd m/z value for the molecular ion?

13C NMR is a technique in which the total number of signals represents the number of unique carbon atoms in a molecule. Propose a structure that is consistent with the following data. a) The IR includes peaks at 1603 and 1495 cm-1.b) The 13C NMR has a total of 7 signals.c) The compound has one acidic proton. 

Which of the molecules gives rise to a molecular ion with an odd value of m/z?

Which of the following is 3-phenylpentane?

How many peaks are in the proton spin decoupled 13C NMR spectrum of 1,3,5-trinitrobenzene?

Identify which one of the following isomers of C6H14 has the C-13 NMR below.

Which of the following compounds matches IR spectrum below?   _____

Which compound gives the following 1H NMR spectrum?

What is the structure of the compound in the following 1H-NMR spectrum with the molecular formula C10H12O2? Relative integration is shown

Which of the following C4H7OCl compounds best fits the proton NMR spectrum shown below? (The numbers above the peaks are integration values.)