Question

Массовая доля H2O и SO2

Answer 1

Mr(H2O)=2*1+16=18
W(H)=2/18=0.11=11%
W(O)=16/18=0.89=89%

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