Which of the three isomers with the molecular formula C₆H₁₁Cl has the following ¹H NMR spectrum?

Draw the DEPT sequence spectra expected for the molecule given below.

Draw the expected ¹³C NMR spectrum for the given molecule.

A student tried to synthesize some cyclohexyl chloride in the laboratory by reacting cyclohexanol with one equivalent of sodium chloride in a large excess of concentrated sulfuric acid. Unfortunately, the synthesis was not successful, and after the synthesis was completed, the student isolated a compound of formula C₆H₁₀. If the ¹³C-NMR spectrum of the compound is shown below:

(i) Give a plausible structure for the product.
(ii) Assign all peaks in the ¹³C-NMR spectrum of the product.
(iii) To obtain a higher yield of cyclohexyl chloride, suggest modifications in the reaction.

There are two possible McLafferty rearrangements that 2-methyloctan-4-one can undergo. What products are formed in each case?

Which compound produces the most intense peak at m/z = 71?

The mass spectra of 1-methoxybutane and 1-ethoxypropane are shown below. Identify which spectrum corresponds to each compound

Use the rule of 13 to provide the molecular formula of a compound that contains C, H, and two O with M⁺ = 118.

Determine the possible number/s of N in a neutral compound that contains C, H, and N with M⁺ = 84.

A high-resolution mass spectrometer can distinguish between C₇H₁₀N₂ and C₇H₆O₂, both having a molecular mass of 122 amu. True or false.

Apart from using the molecular mass, how else can you determine that the fragment peak at m/z 63 in the below-given mass spectrum for 1-bromo-2-chloroethane includes chlorine, not bromine?

What is the expected ratio of the M, M + 2, and M + 4 peaks for 1,2-dibromoethane?

Consider the following mass spectrum:

Identify which distinctive feature indicates the presence of sulfur, chlorine, bromine, iodine, or nitrogen. Try to determine the molecular formula of the compound.