Mr(ZnCO3) = Mr = Ar(Zn) + Ar(C) + 3Ar(O) = 65 + 12 + 3 * 16 = 125
w(Zn) = Ar(Zn) / Mr = 65 / 125 = 0.52 = 52%
w(C) = Ar(C) / Mr = 12 / 125 = 0.096 = 9.6%
w(O) = 3Ar(O) / Mr = 48 / 125 = 0.384 = 38.4%
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Mr(ZnCO3) = Mr = Ar(Zn) + Ar(C) + 3Ar(O) = 65 + 12 + 3 * 16 = 125
w(Zn) = Ar(Zn) / Mr = 65 / 125 = 0.52 = 52%
w(C) = Ar(C) / Mr = 12 / 125 = 0.096 = 9.6%
w(O) = 3Ar(O) / Mr = 48 / 125 = 0.384 = 38.4%