1) NaCl---> Na(+)+Cl(-)
2)<span>KNO3---></span><span>K(+)+NO3(-)</span>
<span>3)<span>CaCO3---></span><span>не диссоц</span></span>
<span><span>4)<span>Na3PO4--->3</span><span>Na(+)+PO4(3-)</span></span></span>
<span><span><span>5)<span>Cu(NO3)2---><span>Cu(2+)+2NO3(-)</span></span></span></span></span>
<span><span><span><span><span>6)<span>BaSO4--- не диссоц</span></span></span></span></span></span>
<span><span><span><span><span><span>7)<span>Fe(NO3)2---><span>Fe(2+)+ 2NO3(-)</span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span>8)<span>Fe2(SO4)3--->2</span><span>Fe(3+)+3SO4(2-)</span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span>9)<span>Ca3(PO4)2--- не диссоц</span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span>10) <span>K2SiO3--->2</span><span>K(+)+ SiO3(2-)</span></span></span></span></span></span></span></span></span></span></span>
CaCO3 = CaO + CO2
CaO + 2H2O = Ca(OH)2
Ca(OH)2 + Na2CO3 = CaCO3 + 2NaOH
CaCO3 + CO2 + H2O= Ca(HCO3)2
Ca(HCO3)2 = CaCO3 + CO2 + H2O
2) C + O2 + CO2
2CO2 = 2CO + O2
2CO + O2 = 2CO2
CO2 + H2 = H2O + C
Ответ: г) золото...........
Na2SO3 + H2SO4 = Na2SO4 + SO2↑ + H2O