Объяснение:
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% =16%
W(S) = Ar(S) * n / Mr(Al2(SO4)3 *100% = 32*3 / 342 *100% =28%
W(O) = Ar(O) *n / Mr(Al2(SO4)3 *100% = 16*12 / 342 *100% =56%
Объяснение:
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% =16%
W(S) = Ar(S) * n / Mr(Al2(SO4)3 *100% = 32*3 / 342 *100% =28%
W(O) = Ar(O) *n / Mr(Al2(SO4)3 *100% = 16*12 / 342 *100% =56%