It is common in mass spectrometry to assume that the massof a cation is the same as that of its parent atom. (a) Using datain Table 2.1, determine the number of significant figures thatmust be reported before the difference in masses of 1H and1H+ is significant. (b) What percentage of the mass of an 1Hatom does the electron represent? Comparison of the Proton, Neutron, and ElectronMass (amu)1.0073TABLE 2.1ParticleChargePositive (1+)None (neutral)Negative (1–)Proton1.0087NeutronElectron5.486 × 104

The concept of Significant digits comes under scientific notation. Significant digits or figures are…

Answered: Comparison of the Proton, Neutron, and…

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions

Section4.8: Stoichiometry Of Reactions In Aqueous Solution-titrations

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It is common in mass spectrometry to assume that the mass
of a cation is the same as that of its parent atom. (a) Using data
in Table 2.1, determine the number of significant figures that
must be reported before the difference in masses of ¹H and
¹H⁺ is significant. (b) What percentage of the mass of an ¹H
atom does the electron represent?

Comparison of the Proton, Neutron, and Electron
Mass (amu)
1.0073
TABLE 2.1
Particle
Charge
Positive (1+)
None (neutral)
Negative (1–)
Proton
1.0087
Neutron
Electron
5.486 × 104

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