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(D) For an ideal gas,the internal energy $(U)$ is defined as the sum of the kinetic energies of its molecules.Since ideal gas molecules are considered

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Temperature

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(D) For an ideal gas,the internal energy $(U)$ is defined as the sum of the kinetic energies of its molecules.Since ideal gas molecules are considered point masses with no intermolecular forces,the internal energy depends solely on the translational kinetic energy.According to the kinetic theory of gases,the average kinetic energy per mole is given by $U = \frac{3}{2} RT$ for a monoatomic ideal gas.Since $R$ is the universal gas constant,it is clear that $U \propto T$.Therefore,the internal energy of an ideal gas is a function of temperature only.

The energy of an ideal gas depends only on its

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