Question

Помогите плз_____________

Answer 1

1)CuO
m= 3*80=240
N=3+6.02=18.06*10(23)
V=3*22,4=67,2
2) SO3
n=4
m=320
V=89.6
4) Cl2
n=1
N=6.02
V=22.4