Solubility of Compounds

Question

According to the solubility rules, you can pair each cation with each anion to form soluble compounds in the following way:

Pb2+ ---> NO3-	Sr2+ ---> S2-
Na+ ---> CO32-	CO2+ ---> SO42-

Enter the chemical formulas of the soluble compounds.

Express your answers as chemical formulas in alphabetical order separated by commas.

Answer 1

I'll let you put them in alphabetical order, but the soluble compounds would be:

Pb(NO₃)₂ lead nitrate

NaNO₃ sodium nitrate

Sr(NO₃)₂ strontium nitrate

Co(NO₃)₂ cobalt nitrate

Na₂CO₃ sodium carbonate

Na₂S sodium sulfide

Na₂SO₄ sodium sulfate