How to determine the exit gas density in Q2: Ideal gas law PV=nRT Density: p = ,V = mass Number of moles: n = P n P Overall: RT V MW MW of exit gas? MW Where: mass P mass MW PMW RT mg (exit,wet basis) mg (exit,dry basis) mw (exit,water) MW dry air MW water mg (exit, dry basis) = mg (in, dry basis) mg (in, wet basis) = mg (in, dry basis) + mg (in, dry basis)Hgi mg (exit, wet basis) = mg (in, dry basis) + mg (in, dry basis)Hgi+mv mw (exit) = = mg (in, dry basis) Hgi + mv