Дано:
m(
)=5 кг
<u>w(
)=0.72</u>
m(Fe)=?
<span>Fe2O3 + 3CO = 2Fe + 3CO2--->w(CO)=0.28
</span>M(Fe)=56г/моль
w(Fe)=
M(
)=112+48+84=244г/моль
w(Fe)=<u />
=0.459
=
x=3.1875кг
За киснем 56
куенгеоангокынгенгегекорынкуфпурплрп
Try this solution:
1. The pure fat for 1kg with 3% is 1*0.03;
2. The pure fat for 0.5kg with 2% is 0.5*0.02;
3. The pure fat for the mix is (1+0.5)*x;
4. If to solve the equation: 1.5*x=1*0.03+0.5*0.02, then x=2/75 *100=2.(6)%
Answer: 2.(6)%