a, \(n_{Fe_3O_4}=\dfrac{23,2}{232}=0,1\left(mol\right)\)
PT: \(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)
Theo PT: \(n_{Fe}=3n_{Fe_3O_4}=0,3\left(mol\right)\Rightarrow m_{Fe}=0,3.56=16,8\left(g\right)\)
b, \(n_{O_2}=2n_{Fe_3O_4}=0,2\left(mol\right)\Rightarrow V_{O_2}=0,2.22,4=4,48\left(l\right)\)
\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)
0,3 0,2 0,1
\(n_{Fe_3O_4}=\dfrac{23,2}{232}=0,1\left(mol\right)\)
\(a,m_{Fe}=0,3.56=16,8\left(g\right)\)
\(b,V_{O_2}=0,2.22,4=4,48\left(l\right)\)
\(a)n_{Fe_3O_4}=\dfrac{23,2}{232}=0,1\left(mol\right)\\ PTHH:3Fe+2O_2\xrightarrow[t^0]{}Fe_3O_4\\ n_{Fe}=0,1.3=0,3\left(mol\right)\\ m_{Fe}=0,3.56=16,8\left(g\right)\\ b)n_{O_2}=0,1.2=0,2\left(mol\right)\\ V_{O_2}=0,2.22,4=4,48\left(l\right)\)