Table 1: Gas observations Step/Reaction Observations Zn + HCl Water began dispersing from the pipet tube while it was filling up with a slightly neon yellow H2 H2 gas + flame Mn + H2O2 O2 gas + smoldering toothpick Gas mixture + flame a. Write a balanced chemical equation describing the reaction of zinc and hydrochloric acid (1 mark) b. Outline the procedures you would use to determine whether a gas sample was composed of hydrogen or oxygen. (3 marks)