The combustion of propane (C3H8) produces CO2 and H2O : C3H8 (g) + 5 O2 (g) = 3 CO2 (g) + 4 H2O (g)
How many moles of H2O be produced from the combustion of 5.5 moles of O2 ?
a. 2.1 mol
b. 4.4 mol
c. 5.5 mol
d. 8.6 mol

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?