Question 319General Subjects - Assistant Engineer

70% to pass

What statement is true concerning the internal energy of a substance?

AThe internal potential and kinetic molecular energies of a substance is a function of the state of matter of the substance, whereas the internal potential and kinetic molecular energies of a substance are in no way related to the temperature of a substance.

BThe internal potential and kinetic molecular energies of a substance is a function of the temperature of the substance, whereas the internal potential and kinetic molecular energies of a substance are in no way related to the state of matter of a substance.

CThe internal potential molecular energy of a substance is a function of the state of matter of the substance, whereas the internal kinetic molecular energy of a substance is a function of the temperature of the substance.

DThe internal potential molecular energy of a substance is a function of the temperature of the substance, whereas the internal kinetic molecular energy of a substance is a function of the state of matter of the substance.

AI Explanation

The correct answer is C. The internal potential molecular energy of a substance is a function of the state of matter of the substance, whereas the internal kinetic molecular energy of a substance is a function of the temperature of the substance. This is because the state of matter (solid, liquid, gas) determines the intermolecular forces and potential energy, while the temperature affects the kinetic energy of the molecules. The other options are incorrect because they either incorrectly state the relationship between internal energy and state of matter/temperature, or they mix up the factors that affect potential and kinetic energy.