Which of the following best defines the internal energy of a system?

A.
The internal energy is the difference of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules.

B.
The internal energy is the product of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules.

C.
The internal energy is the quotient of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules.

D.
The internal energy is the total of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules

Question

BreBreDoeCCx BreBreDoeCCx

26-05-2017
Chemistry

contestada

Which of the following best defines the internal energy of a system?

A.
The internal energy is the difference of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules.

B.
The internal energy is the product of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules.

C.
The internal energy is the quotient of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules.

D.
The internal energy is the total of the kinetic energy due to the rotational, vibrational and translational motion of molecules and potential energy associated with the vibrational energy of atoms within molecules

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javonp23 javonp23 · Answer 1 · 2017-05-26T18:57:35+02:00

In thermodynamics, the internal energy of a thermodynamic system, or a body with well-defined boundaries, denoted by U, or sometimes E, is the total of the kinetic energy due to the motion of molecules (translational, rotational, vibrational) and the potential energy associated with the vibrational and electric energy of atoms within molecules or crystals. It includes the energy in all the chemical bonds, and the energy of the free, conduction electrons in metals.