m1(в-ва КОН)= 100г * 0,1 = 10г.
m2(в-ва КОН )= 100г * 0,5=50г
m( в-во КОН) = 10г+50г=60г
m(р-ра КОН) = 100г+100г=200г
амега КОН= 60кг/200г=0,3
Ответ: 30\%
2H2SO4+C=2SO2+CO2+2H2<span>O </span>→ 2+1=2+1+2 → 3+5=8 (Ответ 2)
<span><span>2<span>N2</span></span>+<span>5<span>O2</span></span>→ <span>2<span>N2O5
</span></span></span><span><span>N2O5</span>+<span>H2O</span> → <span>2<span>HNO3 </span></span></span>
<span><span>6<span>HNO3</span></span>+<span>Al2O3</span> → <span>2<span>Al<span>(NO3)</span>3</span></span>+<span>3<span>H2O
</span></span></span><span><span>Al<span>(NO3)</span>3</span>+<span>3<span>H2O</span></span> → <span>3<span>HNO3</span></span>+<span>Al<span>(OH)</span><span>3</span></span></span>
Ответ:
Объяснение:1)2Al+3O2—>2Al203
2)Al2O3+3H2SO4—>Al2(SO4)3+3H20
3)Al2(SO4)3+3BaCl2—>2AlCl3+3BaSO4
4)AlCl3+3NaOH—>Al(OH)3+3NaCl
5)2Al(OH)3–>Al2O3+3H20(нагревание)
6)3Mg+Al2O3—>3MgO+2Al
2Al(OH)3+3H2SO4=Al2(SO4)3+6H2O
KOH+HNO3=KNO3+H2O