Найдите массовую долю пожалуйста.
Mr(H2SO4)=1*2 + 32 +16 *4 = 98 W(H)=Ar(H) * n / Mr(H2SO4) *100% = 1*2 / 98 *100% = 2% W(S)= Ar(S) * n / Mr(H2SO4) * 100% = 32 *1 / 98 * 100% =33% W(O) = Ar(O) * n / Mr(H2SO4)*100% = 16*4/98 *100% = 65%