A constant characterizing these substances equals the difference between two types of heat capacity, per Mayer’s relation. These substances do not change temperature while undergoing a Joule expansion. A fugacity (10[1])coefficient of 1 (10[1])characterizes these substances, which have a value of 0 for the “b” coefficient measuring (10[1])excluded volume in the van der Waals equation. (10[1])Avogadro’s number times the Boltzmann constant equals a constant named for these substances, (10[1])which are typically assumed to have (10[1])no intermolecular forces. (10[1]-5[1])For 10 points, 8.314 joules per mole-kelvin is the value of a constant named for what substances, governed by the equation “PV equals nRT”? (10[1])■END■