A compound displays a $1^H$ NMR spectrum with a single sharp signal at $7.26$ ppm and no other peaks. Which of the following compounds is most likely responsible for this spectrum?

How many unique $C^{13}$ NMR signals would be observed for ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$ (n-butane)?

For the compound ${\mathrm{CH}}_3\mathrm{CH}{2}_{\mathrm{Cl}}$ (chloroethane), how many distinct $1^H$ NMR signals are expected?

How many distinct signals are expected in the ${\mathrm{^\{1\}}}^H$ NMR spectrum of isopropyl acetate?

Given the compound ${\mathrm{CH}}_3\mathrm{CH}{2}_{}\mathrm{Br}$ (bromoethane), what is the expected multiplicity of each $1^H$ NMR signal?

How many types of electrically unique protons (peaks) are there in the following molecule?

How many types of electrically unique protons (peaks) are there in the following molecule?

How many types of electrically unique protons (peaks) are there in the following molecule?

How many types of electrically unique protons (peaks) are there in the following molecule?