W(k)= 39,7% w(mn)= 27,9% w (0)- остальное формула - вопрос №91117483972790 от Tima411 12.01.2021 06:21

Question

Химия: W(k)= 39,7% w(mn)= 27,9% w (0)- остальное формула -?

Tima411 · Answer

W (O) = 100% - 39.7% - 27.9% = 32.4%32.4% = 0.32439.7% = 0.39727.9% = 0.279n (K) = 0.397 / 39 = 0.01018n (Mn) = 0.279 / 55 = 0.00507 мольn (O) = 0.324 / 16 = 0.02025 мольn (K) : n (Mn) : n (O) = 2 : 1 : 4 = K2MnO4ответ: K2MnO4...