Mining to the sex son preven changes to the Question 2 Exercise 2: A closed vessel contains 0.1 3 of saturated liquid and 0.9 3 of saturated vapor R-134a in equilibrium at 90 F. Determine the percent vapor on a mass basis That is, the vessel contains 90% vapor by volume but only 22.8% vapor by mass O That is, the vessel contains 91% vapor by volume but only 22.4% vapor by mass That is, the vessel contains 90% vapor by volume but only 23.4% vapor by mass O That is, the vessel contains 90% vapor by volume but only 22.8% vapor by mass