Вездесущий неметалл-это мышьяк
<span>S +О2 =SO2</span>
<span>SO2-<span> S</span> +О2
</span><span>S+Fe=<span> FeS</span></span>
<span>FeS+2НСI=<span> H2S</span>+FeСI2
</span><span>H2S+PbSО4=PbS+<span> H2S</span><span>О4</span></span>
P2O5+H2O=2HPO3
n P2O5=10/142=0.07 моль
n HPO3=(0.07*2)*0.8=0.11 моль
m HPO3=80*0.11=8.8 г
6HCl+2Al=2AlCl3+3H2
X=10.8*67.2/54=13.44 літра