18. Which of the following is the definition of internal energy ofa system?a.it is the sum of the kinetic energy of all of its componentsb.it is the sum of the rotational, vibrational, and translationalenergies of all of its componentsc.lt refers only to the energies of the nuclei of the atoms of thecomponent moleculesd.It is the sum of the potential and kinetic energies of thecomponents

Internal energy is sum of total energy of all components. So, it includes all types of energies os…

e sum of the rotational, vibrational, and translational of all of its components s only to the energies of the nuclei of the atoms of t ent molecules sum of the potential and kinetic energies of the nts

e sum of the rotational, vibrational, and translational of all of its components s only to the energies of the nuclei of the atoms of t ent molecules sum of the potential and kinetic energies of the nts

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter17: Statistical Thermodynamics: Introduction

Section: Chapter Questions

Problem 17.17E

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Question

18. Which of the following is the definition of internal energy of
a system?
a.it is the sum of the kinetic energy of all of its components
b.it is the sum of the rotational, vibrational, and translational
energies of all of its components
c.lt refers only to the energies of the nuclei of the atoms of the
component molecules
d.It is the sum of the potential and kinetic energies of the
components

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