Molar and molecular weight of ReO2

• Molecular formula: ReO2 or O2Re
• Relative molecular weight of ReO2: 218.2058
• Molar mass of ReO2: 218.2058 g/mol (0.21821 kg/mol)

Calculation of the relative molecular and molar mass of ReO2

• Mr[ReO2] = Ar[O] * 2 + Ar[Re] = 15.9994 * 2 + 186.207 = 218.2058
• Molar mass (kg/mol) = Mr[ReO2] : 1000 = 218.2058 : 1000 = 0.21821 kg/mol

ReO2: percent composition by element

• Oxygen (O) = 31.9988 : 218.2058 * 100 = 14.665 %
• Rhenium (Re) = 186.207 : 218.2058 * 100 = 85.335 %

Molar mass calculator