6. A container is filled with a mixture of carbon dioxide, oxygen, and nitrogen gases. The total pressure inside the container is 1.5 atm. If the pressure of the carbon dioxide gas is 0.16atm, and the pressure of the oxygen
gas is 45 atm, then what is the partial pressure of the nitrogen gas in atmospheres? 0.89atm

Copper, silver, aluminum, cobalt, chromium, mercury 

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