Molar and molecular weight of Zn(AsO2)2

• Relative molecular weight of Zn(AsO2)2: 279.2498
• Molar mass of Zn(AsO2)2: 279.2498 g/mol (0.27925 kg/mol)

Calculation of the relative molecular and molar mass of Zn(AsO2)2

• Mr[Zn(AsO2)2] = Ar[Zn] + Ar[As] * 2 + Ar[O] * 4 = 65.409 + 74.9216 * 2 + 15.9994 * 4 = 279.2498
• Molar mass (kg/mol) = Mr[Zn(AsO2)2] : 1000 = 279.2498 : 1000 = 0.27925 kg/mol

Zn(AsO2)2: percent composition by element

• Zinc (Zn) = 65.409 : 279.2498 * 100 = 23.423 %
• Arsenic (As) = 149.8432 : 279.2498 * 100 = 53.659 %
• Oxygen (O) = 63.9976 : 279.2498 * 100 = 22.918 %

Molar mass calculator