Vitamin D has a percent composition of 42.98% C, and 57.02% H. Its molecular mass is 780.68 g/mol. Find its empirical and molecular formulas. Show your work.

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?