HNO3+KOH->KNO3+H2O
1)m чистого (HNO3)=86*0,03=3(г)
2)n(HNO3)=3:63=0,05(моль)
3)n(HNO3)=n(KNO3)=0,05(моль), т.к 1:1
4)m(KNO3)=0,05*101=5,05(г)
5)V(KNO3)=0,05*22,4=1,12(л)
<span>O2 + 2H2 = 2H2O
O2 + </span><span>4K + 2H2O = 4KOH
</span><span>O2 +2Mg = 2MgO
</span><span>3O2 + 4Al = 2Al2O<span>3
</span></span><span>O2 + C = CO<span>2
</span></span>5O2 + 4P = 2P2O5
<span>O2 + S = SO<span>2</span></span>