If 18 L of hydrogen react with oxygen to form water how many liters of oxygen are needed

Which statement best describes the function of enzymes?

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?

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils