Exam 13: Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

The mass spectrum of an unknown compound has a molecular ion peak with a relative abundance of 43.27% and an M + 1 peak with a relative abundance of 3.81%.How many carbon atoms are in the compound?

Which of the following statements is true about a molecular ion?

Which of the following wavenumbers corresponds to the bond shown below? C C

How many centimeters (cm)are there in one micrometer (μm)?

Identify the compound that has a formula of C₃H₆O with a stretching vibration at 1050 cm^-1 and an absorption band at 3400 cm^-1,but no doublet at 1380 cm^-1.

Identify the compound with the longest λ_max in an UV spectrum.

Does the position of the stretch of the oxygen-hydrogen bond in alcohols depend on the concentration of the alcohol?

Which of the following statements best explains how a hydrocarbon can show an M+2 peak in mass spectrometry?

In the electromagnetic spectrum,________ frequencies,________ wavenumbers,and ________ wavelengths are associated with high energy.

Which of the following statements best explains the information we can gain from infrared spectroscopy?

Which molecule below has a significant band in the IR at 3400 cm^-1 (strong and broad)?

Which of the following m/z values correspond to the M+2 peak of the following compound?

Which of the following is not true about the M+1 peak?

Give the m/z ratio that corresponds to the molecular ion in the mass spectrum of ethylpropylamine.

Which of the following statements is not true about electromagnetic radiation?

In which of the following molecules is the presence of the IR peak for C C not observed?

Which of the following methods is most suitable for studying conjugation in molecules?

Ultraviolet spectroscopy provides information about

Which m/z peak is expected to be the base peak of cyclopentanol?

How would you use mass spectrometry to quickly distinguish between the two compounds below that have the same molecular mass?