<span>Ca(HCO3)2</span><span> = </span><span>CaCO3</span><span> + </span><span>CO2</span><span> + </span><span>H2O
</span>2CO<span> + </span><span>O2</span><span> = </span>2<span>CO<span>2
</span></span><span>CO2</span><span> + </span>0C<span> = </span><span>CO<span>2
</span></span><span>Hg(NO3)2</span><span> + </span>2Cu<span> = </span>Hg<span> + </span>2<span>Cu(NO3) Не уверена,т.к. на доске не закончено уравнение
</span><span>Fe(OH)2</span><span> = </span>FeO<span> + </span><span>H2O
</span>2Al<span> + </span><span>I2</span><span> = </span>2<span>AlI
</span>
1. Соль, сода, крахмал.
2. мяч, стол, стул
3. Кровь, зола, цемент.
O-CH3
|
CH3-COH+2CH3-OH(H+) =CH3-CH+H2O
|
O-CH3
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CaCO₃ + 2HNO₃ = Ca(NO₃)₂ + H₂O + CO₂
m=250 г
w₁=0,20
w₂=0,80
V₀=22,4 л/моль
m(CaCO₃)=m(1-w₁)
m(CaCO₃)/M(CaCO₃)=V(CO₂)/V₀
V(CO₂)=V₀m(1-w₁)/M(CaCO₃)
объем газа
V'(CO₂)=w₂V(CO₂)
V'(CO₂)=w₂V₀m(1-w₁)/M(CaCO₃)
V'(CO₂)=0,80*22,4*250*(1-0,20)/100=35,84 л
