<span>H2SO4-серная кислота
</span><span>NaOH-гидроксид натрия
</span>
<span>MgO -оксид магния
</span><span>K3PO4 - фосфат калия
</span>
W=m(вещества)/m(раствора)*100%
<span>CaO+2HCl=CaCl2 + H2O</span><span> </span>
<span><span>CaO+2H+ + 2Cl- = Ca2+ + 2Cl- +H2O
CaO + 2H+ = Ca2+ + H2O</span></span>
<span>2Mg+O2=2MgO</span>
<span>2HgO=2Hg+O2</span>
<span>3Mg + Fe2O3 = 3MgO + 2Fe</span>
<span><span>2H2+O2=2H2O</span></span>
<span><span><span>2</span>Zn<span>+</span>O2<span>= 2ZnO</span></span></span>