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At 0 K, which of the following properties of a gas will be zero?

1. Kinetic energy
2. Potential energy
3. Density
4. Mass

Correct answer: Kinetic energy

Solution

At 0 K, the kinetic energy of gas molecules becomes zero because temperature is directly proportional to the average kinetic energy of the particles. Other properties like potential energy, density, and mass are not directly affected by temperature reaching absolute zero.

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