<span>1.</span>
<span>HCl+AgNO3= HNO3+ AgCl</span>
<span>H+Cl+Ag+NO3=H+NO3+AgCl</span>
<span>Ag+Cl=AgCl</span>
<span>2.</span>
<span>FeOH3+HNO3=FeNO3+H2O</span>
<span>Fe+OH+H+NO=Fe+NO3+H2O</span>
<span>OH+H=H2O</span>
<span>3.</span>
<span>Na2CO3+CaOH2=NaOH+CaCO3</span>
<span>Na+CO3+Ca+OH=Na+OH+CaCO3</span>
<span>CO3+Ca=CaCO3</span>
<span>4.</span>
<span>BaCl2+H2SO4=BaSO4+HCl</span>
<span>Ba+Cl+H+SO4=BaSO4+H+Cl</span>
<span>Ba+SO4=BaSO4</span>
С коэффициентами у меня беда(