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(1g). (3p) Which one is invalid among the following statements regarding ideal gas? (A) The compressibility factor of ideal gas is equal to 1 (B) A substance can be considered

as ideal gas if its compressibility factor is around 1 (>0.95) (C) Ideal gas is a vapor that is around (close to) saturated vapor line (D) Ideal gas is a specific vapor that is far from saturated vapor line (E) For ideal gas, the specific internal energy, specific enthalpy, and specific heat at constant pressure, specific heat at constant volume and specific heat ratio are functions of T only

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