Duff States That Equal Masses of All Substances Have Equal

question 19

Multiple Choice

Duff states that equal masses of all substances have equal changes in internal energy when they have equal changes in temperature. Javan states that the change in internal energy is equal to a constant times the change in temperature for every ΔT, no matter how large or how small ΔT is, but that the constant is different for different substances. Which one, if either, is correct?

• A) Neither, because the specific heat depends on the substance and may vary with temperature.
• B) Neither, because a change of state may involve release or absorption of latent heat.
• C) Neither because a substance may do work during a temperature change.
• D) All of the statements above are correct.
• E) Only statements (a) and (b) are correct.

---

Definitions:

Expert Power

Authority or influence derived from possessing knowledge or skills in a particular area.

Physical Resources

Tangible assets such as buildings, machinery, and raw materials that an organization uses to conduct its business.

Visibility

The degree to which an entity's presence, actions, or status is known and perceivable by others.

Contingency

The dependence on chance or on the fulfillment of a condition; in management, it refers to the idea that there is no one best way to organize or lead, and that it will depend on various situational factors.