Calculate the volume in liters of oxygen gas at STP required to fully react with 42.5 g of ethyne, C2H2. 2 C2H2(g) + 5 O2(g) —> 4 CO2(g) + 2 H2O(g)

Answer should be written as XX. X L O2

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?