The graph illustrates the percent change in the mass of pieces of potato placed into increasingly concentrated salt solutions. From the graph, identify the isotonic point of the potato (the salt solution that contains the same salt concentration as the potato. Then explain what happens to cause the potato to gain or lose mass in different salt solutions HELP FAST WILL GIVE BRAINLIEST THX

one would be wind another would be water density

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.