Be^2+ + 2NO3^- + 2K^+ + 2OH^- = 2K^+ + 2NO3^2- + Be(OH)2
H2O + CO2 -> H2CO3
H2O + CuO -> реакция не идёт
H2O + BaO -> Ba(OH)2
2HCl + CuO -> CuCl2 + H2O
HCl + SO2 -> реакция не идёт
H2SO4 + Li2O -> Li2SO4 + H2O
6NaOH + P2O5 -> 2Na3PO4 + 3H2O
№ 3
Mr(CuSO4)=64+32+4*16= 160
W(Cu)=64/160=0.4=40%
W(S)=32/160=0.2=20%
W(O4)=64/160=0.4=40%
Mr(Fe2SO3)=2*56++32+3*16=192
W(Fe2)=112/192=0.58=58%
W(S)=32/192=0.17=17%
W(O3)=48/192=0.25=25%
Mr(HNO3)=1+14+3*16=63
W(H)=1/63=0.02=2%
W(N)=14/63=0.22=22%
W(O3)=48/63=0.76=76%
<em>Ca + 2H₂O = Ca(OH)₂ + H₂ </em>
<em>Ca(OH)₂ + 2HNO₃ = Ca(NO₃)₂ + 2H₂O </em>
<em>Ca(NO₃)₂ + K₂CO₃ = CaCO₃ + 2KNO₃ </em>
<em>CaCO₃ + CO₂ + H₂O = Ca(HCO₃)₂ </em>
<em>Ca(HCO₃)₂ = CaCO₃ + H₂O + CO₂ </em>
решение 2 задачи))))))))))))))))))