Zn + 2H+ → Zn2+ + H2 2Al + 3Cu2+ → 2Al3+ + 3Cu

Which elements are oxidized?

hydrogen (H) and aluminum (Al)

hydrogen (H) and copper (Cu)

zinc (Zn) and aluminum (Al)

zinc (Zn) and copper (Cu)

What does the process of natural selection involve

At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?

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?