Molar and molecular weight of ZnI2

• Molecular formula: ZnI2 or I2Zn
• Relative molecular weight of ZnI2: 319.21794
• Molar mass of ZnI2: 319.21794 g/mol (0.31922 kg/mol)

Calculation of the relative molecular and molar mass of ZnI2

• Mr[ZnI2] = Ar[I] * 2 + Ar[Zn] = 126.90447 * 2 + 65.409 = 319.21794
• Molar mass (kg/mol) = Mr[ZnI2] : 1000 = 319.21794 : 1000 = 0.31922 kg/mol

ZnI2: percent composition by element

• Iodine (I) = 253.80894 : 319.21794 * 100 = 79.51 %
• Zinc (Zn) = 65.409 : 319.21794 * 100 = 20.49 %

Molar mass calculator