a) PTHH: Zn + 1/2 O2 -to-> ZnO
b) nZn=6,5/65=0,1(mol)
=> nO2= 0,05(mol)
=>V(O2,đktc)=1,12(l)
=>Vkk(đktc)=5,6(l)
\(n_{Zn}=\dfrac{6.5}{65}=0.1\left(mol\right)\)
\(2Zn+O_2\underrightarrow{^{t^0}}2ZnO\)
\(0.1....0.05\)
\(V_{kk}=5V_{O_2}=5\cdot0.05\cdot22.4=5.6\left(l\right)\)
a) PTHH: 2Zn + O2 =(nhiệt)=> 2ZnO
b) Thể tích không khí: VKK(đktc) = 1,12÷15=5,6(l)