Theo đề ta có PTHH:
2H2 + O2 \(\underrightarrow{đp}\) 2H2O
Theo đề: \(n_{H_2O}=\dfrac{900}{18}=50\left(mol\right)\)
Theo PTHH: \(n_{H_2}=n_{H_2O}=50\left(mol\right)\)
=> \(V_{H_2}=50\times22,4=1120\left(l\right)\)
\(n_{O_2}=\dfrac{1}{2}n_{H_2O}=\dfrac{1}{2}\times50=25\left(mol\right)\)
=> \(V_{O_2}=25\times22,4=560\left(l\right)\)