Объяснение:
Mr(KMnO4) = 39 + 55 + 16*4 =158
W(K) = Ar(K) *n / Mr(KMnO4) *100% = 39 *1 / 158 *100% =25%
W(Mn) = Ar(Mn) *n / Mr(KMnO4) *100% = 55 * 1/ 158 *100% =35%
W(O) = Ar(O) *n / Mr(KMnO4) *100% = 16*4 / 158 *100% =40%
Объяснение:
Mr(KMnO4) = 39 + 55 + 16*4 =158
W(K) = Ar(K) *n / Mr(KMnO4) *100% = 39 *1 / 158 *100% =25%
W(Mn) = Ar(Mn) *n / Mr(KMnO4) *100% = 55 * 1/ 158 *100% =35%
W(O) = Ar(O) *n / Mr(KMnO4) *100% = 16*4 / 158 *100% =40%