Please specify contained on whose molecular formula is:

| October 6, 2019

1.Complete NaOH + ? ->NaHCO3 C+4HNO3->CO2 + 4NO2 + ? ? +CO2 -> Na2CO3 CO2 ? -> H2CO3 2. Please specify contained on whose molecular formula is: a) CO2 b) (NH4)2CO3 c) MgCO3 d) Al2 (CO3)3 f) NaHCO3 Find valence of carbon in each of them. 3.Write formulas of substances a) Barium carbonate b) hydrogen carbonate magnesium c) potassium carbonate d) carbonic acid

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