I need to know the answer

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

What is the value of the standard enthalpy of formation of an element in its most stable form?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?