\(B1:\\ a,n_{Fe_2O_3}=\dfrac{80}{160}=0,5\left(mol\right)\\ n_{Fe}=0,5.2=1\left(mol\right)\Rightarrow m_{Fe}=1.56=56\left(g\right)\\ n_O=0,5.3=1,5\left(mol\right)\\ m_O=1,5.16=24\left(g\right)\\ b,n_{Fe_3O_4}=0,5\left(mol\right)\\ \Rightarrow n_{Fe}=0,5.3=1,5\left(mol\right)\Rightarrow m_{Fe}=1,5.56=84\left(g\right)\\ n_O=4.0,5=2\left(mol\right)\Rightarrow m_O=2.16=32\left(g\right)\\ c,Đồng.mấy.oxit.em.ơi???\\ d,n_{SO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\\ \Rightarrow n_S=n_{SO_2}=0,2\left(mol\right)\Rightarrow m_S=0,2.32=6,4\left(g\right)\\ n_O=0,2.2=0,4\left(mol\right)\Rightarrow m_O=0,4.16=6,4\left(g\right)\\ e,n_{CO_2\left(đkt\right)}=\dfrac{48}{24}=2\left(mol\right)\\ \Rightarrow n_C=n_{CO_2}=2\left(mol\right)\Rightarrow m_C=2.12=24\left(g\right)\\ n_O=2.2=4\left(mol\right)\Rightarrow m_O=4.16=64\left(g\right)\)