M(Ni) = 2 т *0.12 = 0.24 т = 240 кг
v(Ni) = 240 *1000 /58.7 = 4088.6 моль
m(Cr) = 2 т *0.08 = 0.16 т = 160 кг
v(Cr) = 160*1000/52 = 3076.9 моль
m(Fe) = 2 - 0.24 - 0.16 =1.6 т = 1600 кг
v(Fe) = 1600 *1000/56 = 28571.4 моль
<span>H2SO4 + CuO = CuSO4
+ H2O</span>
<span>
</span>
m — масса раствора
кислоты
<span>m(CuSO4)=8 г
</span>
<span>w(H2SO4)=60%
</span>
<u>m(H2SO4)=m*w/100
</u>
<span>M(CuSO4) =159,5 г/моль
</span>
<span>M(H2SO4)=98
г/моль
</span>
<span>
</span>
<span>m(CuSO4)/M(CuSO4) =
m(H2SO4)/M(H2SO4)</span>
<span>
</span>
<span>m(CuSO4)/M(CuSO4) =
m*w/(100*M(H2SO4))</span>
<span>
</span>
<span>m=m(CuSO4)*100*M(H2SO4)/(w*M(CuSO4))</span>
<span>
</span>
<span>m= 8*100*98/(60*159,5) = <span>8,19
г</span></span>