What happens to mass and energy in a closed system? A. Both energy and mass can enter or exit a closed system.
B. Only mass can enter or exit a closed system.
C. Neither energy nor mass can enter or exit a closed system.
O D. Only energy can enter or exit a closed system.
helppp taking the test right now !

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

Anions are negative charged ions