<span>MgO+<span>H2O=Mg(OH)2</span></span>
<span><span><span>MgO+2<span>HNO3=Mg(NO3)2+H2O</span></span></span></span>
<span><span><span>Al2O3+6<span>HNO3=2Al(NO3)3+3H2O</span></span></span></span>
<span><span><em>Al2O3</em><span> + 3H2O = 2Al(OH)3 </span></span></span>
<span><span><span><span>Al2O3 + 2KOH + 3H2O = 2K[Al(OH)4]</span></span></span></span>
<span><span><span><span><span>Fe(OH)2+H2O=Fe(OH)3</span></span></span></span></span>
<span><span><span><span><span><em>Fe(OH)3 + 3KOH = K3[Fe(OH)6] </em></span></span></span></span></span>
<span><span><span><span><span><em><span> Fe(OH)2+2HNO3=<em>Fe(<em>NO3)2+2H2O</em></em></span></em></span></span></span></span></span>
<span><span><span><span><span><em><span><em><em><span>2KOH+<span>H2S =K2S+2H2O</span></span></em></em></span></em></span></span></span></span></span>
2Al + 3H2SO4 = Al2(SO4)3 + H2↑
сульфат алюминия
Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4
гидроксид алюминия
Al(OH)3 + 2HCl = Al(OH)Cl2 + 2H2O
гидроксохлорид алюминия
Al(OH)Cl2 + HCl =AlCl3 + H2O
хлорид алюминия
BaSO4=BaO+SO3
n=m/M(Mr) M=Mr Mr(BaSO4)=233 M=233г/моль
n(BaSO4)=46,6/233=0,2 моль
n(BaSO4) : n(BaO)=1 : 1, след., n(BaO)=0,2 моль по условию реакции
m=n*M(Mr) m=Mr Mr(BaO)=153 M=153г/моль
m(BaO)= 0,2*153=30,6г
Ответ:30,6г
CH3-CH(CH3)-(CH3)C(C2H5)-CH2-CH2-CH3