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The specific enthalpy of an ideal gas depends on:Group of answer choicesComposition (X) and temperature (T)Composition (X), pressure (P) and temperature (T)Composition (X) and pressure (P)Composition (X) only

Question

The specific enthalpy of an ideal gas depends on:Group of answer choicesComposition (X) and temperature (T)Composition (X), pressure (P) and temperature (T)Composition (X) and pressure (P)Composition (X) only

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Solution

The correct answer is "Composition (X) and temperature (T)".

Here's the step by step explanation:

  1. The specific enthalpy of an ideal gas is a measure of the total energy of a system per unit mass, including both the internal energy and the energy associated with the pressure and volume of the gas.

  2. For an ideal gas, the specific enthalpy is a function of temperature and the composition of the gas. The temperature determines the kinetic energy of the gas molecules, which contributes to the internal energy. The composition of the gas determines the types of molecules present and their specific heat capacities, which also affect the internal energy.

  3. The specific enthalpy of an ideal gas does not depend on pressure. This is a characteristic of ideal gases, which are assumed to have perfectly elastic collisions and no intermolecular forces. In reality, real gases do show some pressure dependence

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