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 coefficient of 1 characterizes these substances, which have a value of 0 for the “b” coefficient measuring excluded volume (10[1])in the van der Waals equation. (10[3])Avogadro’s number (10[1])times the Boltzmann constant (10[1])equals a constant named for these substances, which are typically assumed to have no intermolecular (10[1])forces. (-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”? ■END■ (10[2]0[2])