Physics · Kinetic theory of gases: assumptions, the concept of pressure, kinetic interpretation of temperature
The internal energy of a gas:
The internal energy of a gas:
- A. \) is the sum total of kinetic and potential energies.
- B. is the total transitional kinetic energies
- C. is the total kinetic energy of randomly moving molecules.
- D. is the total kinetic energy of gas molecules
Step-by-step solution
The internal energy of a gas includes both the kinetic energy (due to molecular motion) and the potential energy (due to intermolecular forces). Option A correctly captures this comprehensive definition. Options B, C, and D only consider kinetic energy, omitting potential energy, which is incomplete for real gases. Although for an ideal gas potential energy is negligible, the question refers to a generic gas, so A is the most accurate.
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