а)Fe + HCI-><span>2)FeCI2 + H2</span>
б)Fe(OH)2 + CO2->Fe <span>(HCO3) 2 или 5) <span>FeCO3 + H2O</span></span>
в)Fe(OH)2 + HCI->3)<span> FeCI2 + H2O</span>
<span><span>№2</span></span>
<span><span>а)<span>1. </span>
<span>BeO + Mg = Be + MgO </span>
<span>MgO + 2HCl(разб.) = MgCl2 + H2O </span>
<span>MgCl2 + 2NaOH(разб.) = Mg(OH)2(осадок) + 2NaCl</span></span></span>
Mg(OH)2=MgO+H2O
<span><span>б)С+O2=CO2</span></span>
<span><span>CO2+Na2O=Na2CO3</span></span>
<span><span>Na2Co3+ H2SO4=<span>Na2SO4+H2O+CO2</span></span></span>
<span><span><span><span>Na2SO4+BaCl2=<span>BaSO4(осадок) +2NaCl</span></span></span></span></span>
незабудьте отметить лучшее решение если помогла
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Дано:
m(O2)=4,8 г
Найти:V(O2)
V=Vm * n(ню); n=m/M
M(O2)=16+16=32
n(O2)=4,8/32=0,15 моль
V(O2)=22,4 л/моль * 0,15 моль=3,36
Ответ:V(O2)=3,36 л
1.CH3-CH(OH)-CHO<span>
</span>2.CH3-CH2-COOH
3.CH3-COOCH3
4.CH2=CH-O-CH2-OH
<span>5.H-COO-CH2CH3</span>
<span>6.HO-CH2-CH2-CHO </span>
<span>AlI3 + 3 LiOH = 3 LiI + Al(OH)<span>3
</span></span><span>3H2SO4 + 2Al(OH)3 → Al2(SO4)3 + 6H2O
</span><span>3 FeCl2 + 2 H3PO4 = Fe3(PO4)2 + 6 HCl
</span><span>Fe(NO3)3 + 3 HCl = 3 HNO3 + FeCl<span>3</span></span>