Question

Химия,8 класс. Помогите,пожалуйста!

Answer 1

3.
Mr(SO)=32+16=48
W(S)=32/48=0.67=67%
W(O)=16/48=0.33=33%

Mr(SO2)=32+2*16=64
W(S)=32/64=0.5=50%
W(O)=32/64=0.5=50%

Mr(SO3)=32+3*16=80
W(S)=32/80=0.4=40%
W(O)=48/80=0.6=60%