関連ワード:  is enthalpy a state function    is enthalpy a state function or path function    is enthalpy a state function or pathway dependent    is enthalpy a state function in thermodynamics    is enthalpy a state function or not    is enthalpy a state function in chemistry    enthalpy is a state function justify    enthalpy is a state function explain    enthalpy is a state function true or false    enthalpy is a state function and extensive property