Answer:
ZnCl2
sodium iodide
ammonium carbonate
Pb(NO3)2
Explanation:
Substances that dissolve in water can be accurately determined using the solubility rules.
According to the solubility rules, all nitrates are soluble. This implies that lead II nitrate is also soluble in water.
Similarly, all chlorides are soluble in water hence ZnCl2 is soluble in water.
Sulphates are soluble except those of Pb, Ba, Ca and Mg.
Also, NaI is highly soluble in water.
Lastly, all carbonate salts are insoluble except those of sodium, potassium and ammonium. Hence ammonium carbonate is soluble in water.