A scientist measures the boiling point of saltwater in a lab at an altitude of 800 feet above sea level. A second scientist measures the boiling point of freshwater in a lab at an altitude of 200 feet above sea level. When the scientists compare the data, they conclude that the electrostatic forces in saltwater are equal in strength to the electrostatic forces in freshwater. In one to two sentences, explain how the scientists used the data to draw their conclusion and whether or not this conclusion is valid.