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
