Определить w(S) в FeS2,H2SO3,H2SO4

1. w(S) = M(S)/M(FeS2) = 32/120 = 0,27 => 27%2. w(S) = M(S)/M(H2SO3) = 32/82 = 0.39 => 39%3. w(S) = M(S)/M(H2SO4) = 32/98 = 0.33 => 33%