Bài 4:
\(n_S=\frac{3,2}{32}=0,1\left(mol\right)\)
\(S+O_2\underrightarrow{t^o}SO_2\)
0,1-------------->(mol)
\(V_{O_2}=0,1.22,4=2,24\left(l\right)\)
Bài 5:
a) \(n_{Fe}=\frac{16,8}{56}=0,3\left(mol\right)\)
\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)
0,3_____0,2___0,1(mol)
b) \(m_{Fe_3O_4}=0,1.232=23,2\left(g\right)\)
c) \(V_{kk}=5.V_{O_2}=5.0,2.22,4=22,4\left(l\right)\)
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