Как найти массовую долю CuSO4NaCIH2SO4NAOH

дано CuSO4 NaCL H2SO4 NaOH M(CuSO4)=63.5+32+64=159.5g/mol W(Cu)=63.5/159.5*100=39.81% W(S)=32/159.5*100%=20.06% W(O)=4*16/159.5*100%=40.13% M(NaCL)=23+35.5=58.5g/mol W(Na)=23/58.5*100%=39.32% W(CL)=100%-39.32%=60.68% M(H2SO4)=1*2+32+64=98g/mol W(H2)=1*2/98*100%=2.04% W(S)=32/98*100%=32.65% W(O)=4*16/98*100%=65.31% M(NaOH)=23+16+1=40g/mol W(Na)=23/40*100%=57.5% W(O)=16/40*100%=40% W(H)=1/40*100%=2.5%