Liquid propane is often used as fuel for heating homes, in vehicles such as forklifts, and in portable tanks for stoves on picnics. Imagine a propane tank initially containing 5 L of liquid propane, at room temperature 20C. If a leak occurs in the connecting tube of the tank, determine the temperature of the propane when the pressure in the tank drops to 1 atm. Also determine the total amount of heat transfer from the environment to the tank needed to evaporate all of the propane in the tank.