Question

va rog punctul 4 ❤️❤️

Answer 1

CaO + H2O=Ca(OH)2                   a=CaO                      var nestins
                                                      b=H2O
CaCO3 =CaO +CO2                      c =Ca(OH)2             var stins
                                                       d=CaCO3                carbonat de calciu
Ca+2 H20=Ca(OH)2 + H2             e=Ca
                                                       f=H2CO3                 acid carbonic
CO2 +H2O-----> H2CO3               g=H2O2                     apa oxigenata
                 <------                            h=Ca(NO3)2             azotat de calciu

2H2O2=2H2O + O2

Ca + 2HNO3=Ca (NO3)2 +H2