The equilibrium vapor pressures of water at 25*C and 50*C are 3.16 kPa and 12.51 kPa, respectively. Consider a 1.00 L sample of air at 50*C, with 45% relative humidity, trapped in a rigid cylinder. Suddenly the temperature of the gas is reduced to 25*C. Determine the mass of liquid water (in grams) which will condense.