CaCl2
W(Ca) = Ar(Ca)*n / Mr(CaCl2) = 40 * 1 / 110 * 100% = 40%
W(Cl) = Ar(Cl)*n/ Mr(CaCl2) = 35 * 2 / 110 * 100% = 70%
CaCl2
W(Ca) = Ar(Ca)*n / Mr(CaCl2) = 40 * 1 / 110 * 100% = 40%
W(Cl) = Ar(Cl)*n/ Mr(CaCl2) = 35 * 2 / 110 * 100% = 70%