An evaporative cooler (also called a swamp cooler) is used to cool a building in a hot, dry, desert environment using much less electricity than an air conditioning cycle. Ambient air at 35 oC, 20% humidity enters the device, where liquid water is sprayed into the air and evaporates without any external heat transfer. If the exit reaches 80% humidity, what is the exit temperature? Use the psychrometric chart to solve.