Question

ПОМОГИТЕ СРОЧНО !!!!! ОТДАЮ ВСЕ БЫЛЛЫ ​

Answer 1

Ответ:

Объяснение:

М(Br2O7) = Ar(Br) * 2 + Ar(O) * 7 = 80 * 2 + 16 * 7 = 272

w(Br) = Ar(Br) * n/M(Br2O7) * 100% = 80 * 2/272 * 100% = 58,82%

w(O) = Ar(O) * n/M(Br2O7) * 100% = 16 * 7/272 * 100% = 41,18%

М(Rb2CO3) = Ar(Rb) * 2 + Ar(C) + Ar(O) * 3  = 85 * 2 + 12 + 16 * 3  = 230

w(Rb) = Ar(Rb) * n/М(Rb2CO3) * 100% = 85 * 2/230 * 100% = 73,91%

w(O) = Ar(O)* n/М(Rb2CO3) * 100% = 16 * 3/230 * 100% = 20,87%

w(C) = Ar(C)* n/М(Rb2CO3) * 100% = 12/78 * 100% = 5,22%