Q2. A sample of pure Mg(NO3)2 was decomposed by heating as shown in the equation below.
Give yo
The ga:
(a)
2Mg(NO3)2(s) - 2MgO(s) + 4NO2(g) + O2(g)
A 3.74 x 10-2 g sample of Mg(NO3)2 was completely decomposed by
heating
Calculate the total volume, in cm, of gas produced at 60.0 °C and 100 kPa.
Give your answer to the appropriate number of significant figures.
The gas constant R= 8.31 J K-mol-1.

Exothermic,  physical change after it is already baked

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