Let's say I have a container filled with water and its surface is in direct contact with air. How much heat/energy do I have to supply to the water such that it evaporates under its boiling point? is there even such a formula? I've looked everywhere, and the resources that I have found just calculates the amount of water (in mm/day) is evaporated, and not the amount of energy needed to evaporate the water under its boiling point.
Sorry if my question seems confusing.