Verified answer

Ответ:

Объяснение:

Мr(Н2SO4) = Ar(H)* 2 + Ar(S) + Ar(O) * 4 = 1 * 2 + 32 + 16 * 4 = 98

w(S) = Ar(S)/Мr(Н2SO4) * 100% = 32/98 * 100% = 32,65%