a, PTK của Cl2: 2.35,5=71 đvC

b, PTK của H2SO4: 2.1+32+4.16=98 đvC

c, PTK của KMnO4: 39+55+4.16=158 đvC

c. is the bank

The man was taken to the hospital. He was injured in the accident

to study

16cm²

a, PTHH: 4Al+3O2----> 2Al2O3 (1)

2KMnO4---> K2MnO4+MnO2+O2 (2)

nAl=8,1/27= 0,3 mol

Theo PTHH (1) ta có:

nO2=3/4.nAl=3/4.0,3=0,225 mol

=> VO2=0,225.22,4=5,04 (l)

b, Theo PTHH (1) ta có:

nKMnO4=2/1.nO2=2/1.0,225=0,45 mol

=> mKMnO4=0,45.158=71,1 (g)