Question

answer fast in steps​

Answer 1

Answer:

• when magnesium is burnt a white solid of magnesium oxide is seen as observation
• 2Mg(s)+ O2 ➡️2MgO reaction is endothermic as it gives out heat

1. when an iron nail is added to copper sulphate solution equation is
2. Fe(s)+ CUSO4 ➡️ FeSO4+Cu
3. observation is that the iron will turn to a green precipitate or solution and this reaction. is exothermic