HELPPP 1. A solution containing 70 g of NaNO3 at 30 ° C (in 100 ml of H2O) is it saturated or insaturated

2. A solution containing 50 g of NH4CI at 50 ° C (in 100 ml of H2O) is is saturated or insaturated

3. A solution containing 10 g of KClO3 at 50 ° C (in 50 ml of H2O) is it saturated or insaturated

4. A solution containing 90 g of KI at 0 ° C (in 200 ml of H2O) is it saturated or insaturated

Google it that might work

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

The formula is (nh4)2co3