PT: \(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\)
a, \(n_{CH_4}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)
Theo PT: \(n_{O_2}=2n_{CH_4}=0,2\left(mol\right)\)
\(\Rightarrow m_{O_2}=0,2.32=6,4\left(g\right)\)
b, \(n_{CH_4}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
Theo PT: \(n_{O_2}=2n_{CH_4}=0,4\left(mol\right)\)
\(\Rightarrow m_{O_2}=0,4.32=12,8\left(g\right)\)
c, \(n_{CH_4}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\)
Theo PT: \(n_{O_2}=2n_{CH_4}=0,6\left(mol\right)\)
\(\Rightarrow m_{O_2}=0,6.32=19,2\left(g\right)\)