Mr(NO) = 14 + 16 = 30
W(O) = Ar(O) *n / Mr(NO) *100% = 16 *1 / 30 *100% =53%
Mr(CaO) = 40 + 16 = 56
W(O) = Ar(O) * n / Mr(CaO) *100% = 16 *1 / 56 *100% = 29%
Mr(NO) = 14 + 16 = 30
W(O) = Ar(O) *n / Mr(NO) *100% = 16 *1 / 30 *100% =53%
Mr(CaO) = 40 + 16 = 56
W(O) = Ar(O) * n / Mr(CaO) *100% = 16 *1 / 56 *100% = 29%