Question

Mr (A 2 so4 ) 2 =? помогите пож ста

Answer 1

Mr(Al2(SO4)3) = 27 *2 + 32 *3 + 16 * 12 = 342

W(Al) = Ar(Al) * n / Mr(Al2(SO4)3) *100% = 27 *2 / 342 *100% = 15,79 %

W(S) = Ar(S) *n / Mr(Al2(SO4)3) * 100% = 32 * 3 / 342 *100% = 28,07 %

W(O) = Ar(O) * n / Mr(Al2(SO4)3) * 100% = 16 * 12 / 342 *100% = 56,14%