the element bromine at room temperature is a liquid with a density of 3.12 g/ml. calculate the mass of 125ml of bromine. what volume does 85.0g of bromine occupy

The answer for this question is d. none of these

Matter- occupies space and possesses rest massno matter is the opposite

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

Ido not understand.