<span>HNO2- азотистая кислота</span>
<span>P2O5-оксид фосфора (v)</span>
<span>Ba(OH)2,-гидроксид бария (II)</span>
<span> K2SO4-сульфат калия(II)</span>
<span> H2SO4-серная кислота</span>
<span><span>H2SO3- SO2 (IV)</span></span>
<span><span> KOH- K2O</span></span>
<span><span> FE(OH)3-Fe2O3(III)</span></span>
<span><span>H3PO4 - P2O5(V)</span></span>
<span><span> Ba(OH)2- BaO</span></span>
<span><span><span>SO2 4+</span></span></span>
<span><span><span> SO3 6+</span></span></span>
H2S 2-
<span><span><span>CaS 2-</span></span></span>
<span><span><span>H2SO4 6+</span></span></span>