a) S + O2 --to--> SO2
b) \(n_S=\dfrac{9,6}{32}=0,3\left(mol\right)\)
\(n_{O_2}=\dfrac{4,8}{32}=0,15\left(mol\right)\)
PTHH: S + O2 --to--> SO2
Xét tỉ lệ: \(\dfrac{0,3}{1}>\dfrac{0,15}{1}\) => S dư, O2 hết
c)
PTHH: S + O2 --to--> SO2
________0,15----->0,15
=> mSO2 = 0,15.64 = 9,6(g)