1.Complete NaOH + ? ->NaHCO3C+4HNO3->CO2 + 4NO2 + ?? +CO2 -> Na2CO3CO2 ? -> H2CO32. Please specify contained on whose…

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.

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3.Write formulas of substances
a) Barium carbonate
b) hydrogen carbonate magnesium
c) potassium carbonate
d) carbonic acid

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