\(m_{Fe}=0.95\left(tấn\right)=0.95\cdot10^3\left(kg\right)\)
\(\Rightarrow n_{Fe}=\dfrac{0.95\cdot10^3}{56}=\dfrac{19}{1120}\cdot10^3\left(kmol\right)\)
\(\Rightarrow n_{Fe_2O_3}=\dfrac{1}{2}\cdot\dfrac{19}{1120}\cdot10^3\left(kmol\right)\)
\(m_{Fe_2O_3}=\dfrac{19}{2240}\cdot10^3\cdot160=1357.1\left(kg\right)\)
\(\Rightarrow m_{quặng}=\dfrac{1357.1}{60\%}=2261.9\left(kg\right)\)
\(A\)