How are the conditions at which phases are in equilibrium presented on a phase diagram

We can’t you if you only tell us that you have to show us what the answers are

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

Idon't mean to be a smart alec, length of atoms' bonds is the simplest way to define it.

Don’t know. don’t care.look it up on google