Ba(NO₃)₂+Na₂SO₄=2NaNO₃+BaSO₄ (осадок)
моль
n(Ba(NO₃)₂)=n(BaSO₄)=0,03 моль (по уравнению)
г
Ответ: 6,99 г
P2O5+3H2O= 2H3PO4
P2O5+ 6NaOH= 2Na3PO4+3H2O
P2O5+3CaO=Ca3(PO4)2
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2Al+3O</span>₂<span> =2Al</span>₂<span>O</span>₃<span> Al</span>₂<span>O</span>₃<span> +6HCl =-2AlCl</span>₃<span> + 3H</span>₂<span>O
AlCl</span>₃<span> + 3NaOH = Al(OH)</span>₃<span> +3NaCl
Al(OH)</span>₃<span> + 3HNO</span>₃<span> =Al(NO</span>₃<span>)</span>₃<span> + 3H</span>₂<span>O
</span><span>Al(NO</span>₃<span>)</span>₃<span> + Mg =Al + Mg(NO</span>₃<span>)</span>₂<span>
4Al + 3O</span>₂<span> = 2Al</span>₂<span>O</span>₃<span>
</span>Al₂O₃ + 2Si = 2SiO₂ + Al₂<span>O</span>
2Al+3l2=2All3
Al-3e=Al3+l3el2
l2+2e=2l1-l2el3
<em>2.С хлоридом.
Например: </em>
<em>1)6НСl + 2Al = 2AlCl3 + 3H2 </em>
<em>2)2P + 3CI2 = 2PCI3</em>
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