15. Analytical Techniques:IR, NMR, Mass Spect

How many signals would you expect to see in the $1^H$ NMR spectrum of ${\mathrm{CH}}_3\mathrm{CH}{2}_{\mathrm{Cl}}$ (ethyl chloride)?

Which of the following compounds would give only one signal in its $1^H$ NMR spectrum?

How many distinct signals would you expect to observe in the ${13}^C$ NMR spectrum of ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$ (n-butane)?

How many $1^H$ NMR signals would you expect from ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Cl}$ (1-chloropropane)?

How many distinct signals would you expect to observe in the ${\mathrm{^\{1\}}}^H$ NMR spectrum of ${\mathrm{CH}}_{3}O{\mathrm{CH}}_2{\mathrm{CH}}_{2}O{\mathrm{CH}}_3$?

How many distinct signals would you expect to observe in the $1^H$ NMR spectrum of $\left({\mathrm{CH}}_3\right)2\mathrm{CH}{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$?