Question

KClO3--->O2--->H2O--->O2--->CaO--->CuCl2--->Cu(OH)--->CuSO4

Answer 1

1)

2KClO3 (t)= 2KCl + 3O2

O2 + 2H2O = 2H2O

2H2O (t)= 2H2 + O2

O2 + 2Ca = 2CaO.

2)

CuCl2 + 2KOH = Cu(OH)2 + 2KCl

Cu(OH)2 + H2SO4 = CuSO4 + 2H2o