How much total energy is released to cool 28.3 g of steam (water vapor) at 100.0°C to liquid water at 25.5°C? Water has a heat of vaporization of ± 40.7 kJ/mol and a specific heat of 4.184 J/g°C.

Mgo2 is the oxidation state of manganese oxide

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