1. Na=6*10(23)
N=n*Na=4*6*10(23)=24*10(23)
2. Vm=22.4L/mol
n=V/Vm=2.24L/22.4L/mol=0.1mol
N=0.1*6*10(23)=6*10(24)
3. M(CO2)=12+32=44g/mol
n=m/M=8.8g/44g/mol=0.2mol
N=0.2*6*10(23)=1.2*10(23)
P₂O₅ + 3H₂O → 2H₃PO₄
2Cu + O₂ → 2CuO
CoCl₂ + H₂SO₄ → CoSO₄ + 2HCl
3ZnO + 2H₃PO₄ → Zn₃(PO₄)₂ + 3H₂O
HgO + 2HCl → HgCl₂ + H₂<span>O
</span>Pb(NO₃)₂ + BaCl₂ → Ba(NO₃)₂ + PbCl₂
Ca + H₂ → CaH₂
CaO + H₂O → Ca(OH)₂
Al₂O₃ + 6HCl → 2AlCl₃ + 3H₂O
BeO + 2HCl → BaCl₂ + H₂O
Медного купороса 31,25г воды 168,7г
1) Ca(OH)2 + CO2 -> CaCO3 + H2O
2) CaCO3 + CO2 + H2O -> Ca(HCO3)2
3) Ca(HCO3)2 -t-> CaCO3 + CO2 + H2O
Прошу вас.