The sum of the mole fractions for an ideal-gas mixture is equal to 1. Is this also true for a real-gas mixture?

Chapter 9 9.1 Gas Pressure Pressure – the force exerted on a given area P = F/A o Directly proportional to force and inversely proportional to area o The SI unit is the pascal (Pa); 1 Pa = 1 N/m 2 o 1 kPa = 1000 Pa; 1 bar = 100,000 Pa o In the U.S., pressure is measured in pounds per square inch (psi) o Atmosphere...