0 %
Obsah železa v pyritu
Kolik procent železa obsahuje ruda:
pyrite \( \mathrm{FeS}_{2} \)
\( \mathrm{f}\left(\mathrm{FeS}_{2}\right)=\frac{M_{r}(F e)}{M_{r}\left(F e S_{2}\right)}=\frac{55,85}{119,97}=0,4655 \Rightarrow \mathbf{4 6 , 5 5} \% \mathrm{Fe} \)
\( \mathrm{f}\left(\mathrm{FeS}_{2}\right)=\frac{M_{r}(F e)}{M_{r}\left(F e S_{2}\right)}=\frac{55,85}{119,97}=0,4655 \Rightarrow \mathbf{4 6 , 0 0} \% \mathrm{Fe} \)
\( \mathrm{f}\left(\mathrm{FeS}_{2}\right)=\frac{M_{r}(F e)}{M_{r}\left(F e S_{2}\right)}=\frac{55,85}{119,97}=0,4655 \Rightarrow \mathbf{4 7 , 5 5} \% \mathrm{Fe} \)
\( \mathrm{f}\left(\mathrm{FeS}_{2}\right)=\frac{M_{r}(F e)}{M_{r}\left(F e S_{2}\right)}=\frac{55,85}{119,97}=0,4655 \Rightarrow \mathbf{4 5 , 5 5} \% \mathrm{Fe} \)