Определить массовую долю (H2SO4)
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%