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WorksheetsMass Spectroscopy PreTest
Total questions: 14
Worksheet time: 11mins
What do the peaks on the mass spectrum represent?
anions
mass of positively charged fragments
mass of negatively charged fragments
numbers of electrons
Which of the following is NOT a step in the operation of a mass spectrometer?
Accelerate,
Deflect
Radiate
Ionize
The above Mass Spectra of an unknown substance contains an M+ peak of 64 and an M+2 Peak. What is the molecular weight of this substance?
29
49
64
66
What is the molecular weight of this compound?
29
87
54
15
Based on the mass spectrum, which isotope of chlorine is most abundant?
35Cl
37Cl
70Cl
72Cl
Which of the following statements best describes the base peak in a mass spectrum?
The peak from the most stable radical.
The peak of highest intensity.
The peak from the molecule minus an electron.
The peak from the species that has the isotope with the highest atomic number.
Where is the molecular ion peak?
57 amu
29 amu
72 amu
43 amu
which peak is the base peak?
15
29
57
86
which peak is the molecular ion peak?
15
29
57
86
What is the molecular mass of the compound?
83 g/mol
99 g/mol
98 g/mol
55 g/mol
