Sửa đề: 132 → 13,2
Theo ĐL BTKL ta có:
\(m_{metan}+m_{oxi}=m_{cacbon}+m_{nước}\)
\(\Leftrightarrow4,8+m_{oxi}=13,2+10\)
\(\Leftrightarrow m_{oxi}=13,2+10-4,8=18,4\left(g\right)\)
\(PTHH:CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\)
Áp dụng ĐLBTKL ta có:
\(m_{CH_4}+m_{O_2}=m_{CO_2}+m_{H_2O}\)
\(\Rightarrow m_{O_2}=m_{CO_2}+m_{H_2O}-m_{CH_4}=132+10-4,8=137,2\left(g\right)\)