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Ch.2 - Atoms, Molecules, and Ions
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All textbooksBrown 14th EditionCh.2 - Atoms, Molecules, and IonsProblem 38b

Chapter 2, Problem 38b

Consider the mass spectrometer shown in Figure 2.11. Determine whether each of the following statements is true or false. If false, correct the statement to make it true: (b) The height of each peak in the mass spectrum is inversely proportional to the mass of that isotope.

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Hi everyone here we have a question asking us to identify the following statement as correct or incorrect and if it is false, change the statement so that it becomes correct. The intensity of a peak in a mass spectrum is directly proportional to the relative abundance of that isotope. This is correct. And we can use bro ming as an example. So with browning we have two isotopes which means that it is the same elements but it has different masses and that is bro ming 79 Which is its mass and bro mean 81 Which is its mass. And they can be found in abundance of about 5050. So the two peaks in the mass spectrum are in a 1-1 ratio. But if we had a different element that had more or less, it wouldn't be 1 to 1 ratio is only 1 to 1 ratio because they're found about 50 50. So this statement is correct. Thank you for watching. Bye.
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Massspectrometry is more often applied to molecules than to atoms. We will see in Chapter 3 that the molecular weight of a molecule is the sum of the atomic weights of the atoms in the molecule. The mass spectrum of H2 is taken under conditions that prevent decomposition into H atoms. The two naturally occurring isotopes of hydrogen are 1H (atomic mass = 1.00783 amu; abundance 99.9885%) and 2H (atomic mass = 2.01410; abundance 0.0115%). (a) How many peaks will the mass spectrum have?

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