ню(H3PO4)=46/98=0.5моль...............................................................
<span><span><span>(NH4)</span>2SO4</span> + <span>BaCl2</span> → <span>BaSO4</span> + <span>2 <span>NH4<span>Cl
</span></span></span></span>
Дибутиловый эфир .................
1-
2 = KNO3+H2O
3=NACL+H2O
4=Mg+H2O
5=Fe(SO4)2+Cup
6=BaSo4+HAL
7=BaOH2 может быть еще водород