S+O2-->SO2
nS=3,6\32=0,11 mol
nO2=4,48\22,4=0,2 mol
=>O2 dư
theo pt nO2pư=0,11 mol
=>mO2dư =32.(0,2-0,11)=2,88g
theo pt nSO2=0,11 mol
=>mSO2=0,11.64=7.04 g
a)\(S+O_2\underrightarrow{t^o}SO_2\)
\(n_S=\frac{m}{M}=\frac{3,6}{32}=0,1125mol\)
\(n_{O_2}=\frac{n}{22,4}=\frac{4,48}{22,4}=0,2mol\)
b)\(\Rightarrow O_2\) dư \(\left(0,2mol>0,1125mol\right)\)
\(\Rightarrow m_{O_2dư}=32.\left(0,2-0,1125\right)=2,8g\)
c)\(m_{SO_2}=n.M=0,1125.64=7,2g\)