Discussion Topic A system is a group of parts that can be considered one unit. Storm systems,
ecosystems, and our bodies are natural systems. Cars and houses are human-made
systems.
Choose an example of a system, and analyze the energy flow through the system.
Describe in detail how energy enters the system, how energy changes form while in the
system, and how energy leaves the system.

Ibelieve the answer is d

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

The velocity would be 2