In a thermodynamic system, working substances is an ideal gas, its internal energy is in the form of:
Correct answer: A. Kinetic energy only
- A. Kinetic energy only
- B. Potential Energy
- C. Kinetic and potential energy
- D. None of these
Explanation
The internal energy of an ideal gas is determined by the kinetic energy of its particles. Since ideal gases are assumed to have no intermolecular forces, they do not possess potential energy. Therefore, the internal energy is entirely due to the motion of the gas particles. Option A is correct because it accurately represents this concept. Options B, C, and D are incorrect because they either include potential energy or fail to recognize that kinetic energy alone constitutes the internal energy of an ideal gas.
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About Thermodynamics
Thermal equilibrium and heat explain how temperature and energy transfer are related, while molar specific heats describe the heat required by a gas at constant volume or constant pressure. The first law connects heat supplied, work done and change in internal energy, with sign conventions kept distinct from temperature changes.
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