Mr(KNO3) = 40+14+48=102
W(K) = 40:102= 0.39x100=39%
W(N) = 14:102 = 0.137 = 0.14x100=14%
W(O) = 100%-(39+14) = 47%
Объяснение:
Mr(KNO3) = 39 + 14 + 16*3 =62
W(K) = Ar(K) *n / Mr(KNO3) *100% = 39*1 / 62 *100% =63%
W(N) = Ar(N) *n / Mr(KNO3) *100% = 14*1 / 62 *100% =23%
W(O)= Ar(O) *n / Mr(KNO3) *100% = 16*3 / 62 *100% =14%
