Mr(MnCO3) = 55 + 12 + 16*3 = 115
W(Mn) = Ar(Mn) *n / Mr(MnCO3) *100% = 55 * 1 / 115 * 100% = 48%
W(C) = Ar(C) * n / Mr(MnCO3) *100% = 12 *1 / 115 *100% = 10%
W(O) = Ar(O) * n / Mr(MnCO3) *100% = 16 *3 / 115 *100% = 42%
Mr(MnCO3) = 55 + 12 + 16*3 = 115
W(Mn) = Ar(Mn) *n / Mr(MnCO3) *100% = 55 * 1 / 115 * 100% = 48%
W(C) = Ar(C) * n / Mr(MnCO3) *100% = 12 *1 / 115 *100% = 10%
W(O) = Ar(O) * n / Mr(MnCO3) *100% = 16 *3 / 115 *100% = 42%