A sample of oxygen initially at 350 K is heated to 450 K. If the initial volume of the gas was 1 L, what is the final volume (approximately)? (A) 1 L
b) 1.3 L
c) 2 L
d) 2.7 L

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?