Lab partners follow the instructions during their chemistry lab very carefully. They measure 200 mL of a clear liquid into a beaker. Then they measure 50 mL of a different clear liquid into a graduated cylinder. They pour the liquid from the graduated cylinder into the beaker. The image below shows the results.

Icant see the pictures 

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na