Mass spectrometry is more often applied to moleculesthan to atoms. We will see in Chapter 3 that the molecularweight of a molecule is the sum of the atomic weights of theatoms in the molecule. The mass spectrum of H2 is takenunder conditions that prevent decomposition into H atoms.The two naturally occurring isotopes of hydrogen are 1H(atomic mass = 1.00783 amu; abundance 99.9885%) and2H 1atomic mass = 2.01410 amu; abundance 0.0115%2.(a) How many peaks will the mass spectrum have? (b) Givethe relative atomic masses of each of these peaks. (c) Whichpeak will be the largest, and which the smallest?
Mass spectrometry is more often applied to moleculesthan to atoms. We will see in Chapter 3 that the molecularweight of a molecule is the sum of the atomic weights of theatoms in the molecule. The mass spectrum of H2 is takenunder conditions that prevent decomposition into H atoms.The two naturally occurring isotopes of hydrogen are 1H(atomic mass = 1.00783 amu; abundance 99.9885%) and2H 1atomic mass = 2.01410 amu; abundance 0.0115%2.(a) How many peaks will the mass spectrum have? (b) Givethe relative atomic masses of each of these peaks. (c) Whichpeak will be the largest, and which the smallest?
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter2: Chemical Compounds
Section: Chapter Questions
Problem 130QRT: The element bromine is Br2, so the mass of a Br2 molecule is the sum of the mass of its two atoms....
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Question
Mass spectrometry 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
(
2H 1atomic mass = 2.01410 amu; abundance 0.0115%2.
(a) How many peaks will the mass spectrum have? (b) Give
the relative atomic masses of each of these peaks. (c) Which
peak will be the largest, and which the smallest?
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